in soft waer there are many difarent forms as in internet cds word prosesors
the big oporating syitams are apple mac and microsoft
you can also get drivers for sertan external divices e.g. mouses, keybords
Friday, December 01, 2006
Wednesday, November 29, 2006
ict and society
ICT is everywhere in the modern UK home. It has affected the way we go about our daily lives.
For example, entertainment. ICT has provided many ways of whiling away an hour or two
Multi-channel digital television
There are now many digital channels to choose from - you can either use the Freeview service or choose to subscribe to a satellite service. These services also include dozens of 'radio' channels such as Radio 1,2,3 and 4.
Good points: Choice - There are so many transmission channels now available, that broadcasters create special interest channels to attract an audience e.g. Sports, Science, Cooking, Travel and so on
Bad points: Quality - With so much 'air time' to fill, it is hard for broadcasters to find good quality material to fill all those hours of viewing.
Computer games
In recent times, computers have become so powerful and low cost that many of us play computer games for entertainment. You can buy specialised games machines that hook up to a television.
or you can use the Internet to play online games with thousands of other people who are also online with you.
Good points: Very involving and good fun to play with your friends
Bad points: Can be so distracting that 'real life' relationships and demands on your time can suffer. Addictive - there have been news stories reporting that gaming can be a very serious problem for some people who are not able to balance this form of gaming with 'real life'.
Music.
Back in the 50's there were vinyl records and the radio. There were no affordable recording methods. Today we listen and gather our music in a number of new ways.
The invention of the Compact Disc made a huge leap in sound quality - no more hiss crackle and pops that the old vinyl records suffered from. We are able to record our music straight on to a computer. We can pay for a music track in an online music store and download it to our personal MP3 player.
Good points: Many ways of listening to our music - on the move or through our living room Hi-Fi.
Bad points: The music industry is so concerned about illegal copying that Digtial Rights Management (DRM) methods have become common. These sometimes cause a problem when trying to listen to perfectly legal music.
For example, entertainment. ICT has provided many ways of whiling away an hour or two
Multi-channel digital television
There are now many digital channels to choose from - you can either use the Freeview service or choose to subscribe to a satellite service. These services also include dozens of 'radio' channels such as Radio 1,2,3 and 4.
Good points: Choice - There are so many transmission channels now available, that broadcasters create special interest channels to attract an audience e.g. Sports, Science, Cooking, Travel and so on
Bad points: Quality - With so much 'air time' to fill, it is hard for broadcasters to find good quality material to fill all those hours of viewing.
Computer games
In recent times, computers have become so powerful and low cost that many of us play computer games for entertainment. You can buy specialised games machines that hook up to a television.
or you can use the Internet to play online games with thousands of other people who are also online with you.
Good points: Very involving and good fun to play with your friends
Bad points: Can be so distracting that 'real life' relationships and demands on your time can suffer. Addictive - there have been news stories reporting that gaming can be a very serious problem for some people who are not able to balance this form of gaming with 'real life'.
Music.
Back in the 50's there were vinyl records and the radio. There were no affordable recording methods. Today we listen and gather our music in a number of new ways.
The invention of the Compact Disc made a huge leap in sound quality - no more hiss crackle and pops that the old vinyl records suffered from. We are able to record our music straight on to a computer. We can pay for a music track in an online music store and download it to our personal MP3 player.
Good points: Many ways of listening to our music - on the move or through our living room Hi-Fi.
Bad points: The music industry is so concerned about illegal copying that Digtial Rights Management (DRM) methods have become common. These sometimes cause a problem when trying to listen to perfectly legal music.
hardware
Computer hardware is the physical part of a computer, including the digital circuitry, as distinguished from the computer software that executes within the hardware. The hardware of a computer is infrequently changed, in comparison with software and data, which are "soft" in the sense that they are readily created, modified or erased on the computer. Firmware is a special type of software that rarely, if ever, needs to be changed and so is stored on hardware devices such as read only memory (ROM) where it is not readily changed (and is therefore "firm" rather than just "soft").
Most computer hardware is not seen by normal users. It is in embedded systems in automobiles, microwave ovens, electrocardiograph machines, compact disk players, and other devices. Personal computers, the computer hardware familiar to most people, form only a small minority of computers (about 0.2% of all new computers produced in 2003) Market statistics.
Most computer hardware is not seen by normal users. It is in embedded systems in automobiles, microwave ovens, electrocardiograph machines, compact disk players, and other devices. Personal computers, the computer hardware familiar to most people, form only a small minority of computers (about 0.2% of all new computers produced in 2003) Market statistics.
Tuesday, November 28, 2006
copyright
Copyright - Basic facts about Copyright
What is Copyright?
Copyright gives the creators of certain kinds of material rights to control ways their material can be used. These rights start as soon as the material is recorded in writing or in any other way. There is no official registration system. The rights cover:
copying;
adapting;
distributing;
communicating to the public by electronic transmission (including by broadcasting and in an on demand service);
renting or lending copies to the public; and,
performing in public
In many cases, the author will also have the right to be identified on their works and to object if their work is distorted or mutilated.
Introduction
Copyright law originated in the United Kingdom from a concept of common law; the Statute of Anne 1709. It became statutory with the passing of the Copyright Act 1911. The current act is the Copyright, Designs and Patents Act 1988.
Rights covered
The law gives the creators of literary, dramatic, musical, artistic works, sound recordings, broadcasts, films and typographical arrangement of published editions, rights to control the ways in which their material may be used.
The rights cover; broadcast and public performance, copying, adapting, issuing, renting and lending copies to the public.
In many cases, the creator will also have the right to be identified as the author and to object to distortions of his work.
International conventions give protection in most countries, subject to national laws.
Types of work protected
Literary
song lyrics, manuscripts, manuals, computer programs, commercial documents, leaflets, newsletters & articles etc.
Dramatic
plays, dance, etc.
Musical
recordings and score.
Artistic
photography, painting, sculptures, architecture, technical drawings/diagrams, maps, logos.
Typographical arrangement of published editions
magazines, periodicals, etc.
Sound recording
may be recordings of other copyright works, e.g. musical and literary.
Films
broadcasts and cable programmes.
The Copyright (Computer Programs) Regulations 1992 extended the rules covering literary works to include computer programs.
When rights occur
Copyright is an automatic right and arises whenever an individual or company creates a work. To qualify, a work should be regarded as original, and exhibits a degree of labour, skill or judgement
Interpretation is related to the independent creation rather than the idea behind the creation. For example, your idea for a book would not itself be protected, but the actual content of a book you write would be. In other words, someone else is still entitled to write their own book around the same idea, provided they do not directly copy or adapt yours to do so.
Names, titles, short phrases and colours are not generally considered unique or substantial enough to be covered, but a creation, such as a logo, that combines these elements may be.
In short, work that expresses an idea may be protected, but not the idea behind it.
Who owns a piece of work
Normally the individual or collective who authored the work will exclusively own the work. However, if a work is produced as part of employment then it will normally belong to the person/company who hired the individual.
Freelance or commissioned work will usually belong to the author of the work, unless there is an agreement to the contrary, (i.e. in a contract for service).
Rights cannot be claimed for any part of a work which is a copy taken from a previous work. For example, in a piece of music featuring samples from a previous work, the copyright of the samples would still remain with the original author.
Only the owner, or his exclusive licensee can bring proceedings in the courts.
Duration of copyright
The 1988 Copyright, Designs and Patents Act states the duration as;
For literary, dramatic, musical or artistic works
70 years from the end of the calendar year in which the last remaining author of the work dies.
If the author is unknown, copyright will last for 70 years from end of the calendar year in which the work was created, although if it is made available to the public during that time, (by publication, authorised performance, broadcast, exhibition, etc.), then the duration will be 70 years from the end of the year that the work was first made available.
Sound Recordings and broadcasts
50 years from the end of the calendar year in which the work was created, or,
if the work is released within that time: 50 years from the end of the calendar year in which the work was first released.
Films
70 years from the end of the calendar year in which the last principal director, author or composer dies.
If the work is of unknown authorship: 70 years from end of the calendar year of creation, or if made available to the public in that time, 70 years from the end of the year the film was first made available.
Typographical arrangement of published editions
25 years from the end of the calendar year in which the work was first published.
Broadcasts and cable programmes
50 years from the end of the calendar year in which the broadcast was made.
Restricted acts
It is an offence to perform any of the following acts without the consent of the owner:
Copy the work.
Rent, lend or issue copies of the work to the public.
Perform, broadcast or show the work in public.
Adapt the work.
The author of a work, or a director of a film may also have certain moral rights:
The right to be identified as the author.
Right to object to derogatory treatment.
Acts that are allowed
Fair dealing is a term used to describe acts which are permitted to a certain degree without infringing the work, these acts are:
Private and research study purposes.
Performance, copies or lending for educational purposes.
Criticism and news reporting.
Incidental inclusion.
Copies and lending by librarians.
Acts for the purposes of royal commissions, statutory enquiries, judicial proceedings and parliamentary purposes.
Recording of broadcasts for the purposes of listening to or viewing at a more convenient time, this is known as time shifting.
Producing a back up copy for personal use of a computer program.
Playing sound recording for a non profit making organisation, club or society.
(Profit making organisations and individuals should obtain a license from the Performing Rights Society.)
Useful addresses
The Patent Office
Harmsworth House
13-15 Bouverie Street
London
EC4Y 8DP
Tel: 08459 500 505
www.patent.gov.uk
Performing Rights Society
29-33 Berners Street
London
W1P 4AA
Tel. (0207) 306 4069 -B.C.C.
Tel. (0207) 580 5544 -P.R.S.
www.prs.co.uk
CLA
90 Tottenham Court Road
London
W1P 0LP
Tel. 020 7631 5555
www.cla.co.uk
MCPS
Elgar House
41 Streatham High Road
London
SW16 1ER
Tel. (0208) 664 4400
www.mcps.co.uk
Further reading
The original text for the 1988 Copyright Designs and Patent Act can be found at the OSPI (HMSO) website, but should be read in conjunction with all the relevant updates and statutory instruments.
this is the copyright syibul
What is Copyright?
Copyright gives the creators of certain kinds of material rights to control ways their material can be used. These rights start as soon as the material is recorded in writing or in any other way. There is no official registration system. The rights cover:
copying;
adapting;
distributing;
communicating to the public by electronic transmission (including by broadcasting and in an on demand service);
renting or lending copies to the public; and,
performing in public
In many cases, the author will also have the right to be identified on their works and to object if their work is distorted or mutilated.
Introduction
Copyright law originated in the United Kingdom from a concept of common law; the Statute of Anne 1709. It became statutory with the passing of the Copyright Act 1911. The current act is the Copyright, Designs and Patents Act 1988.
Rights covered
The law gives the creators of literary, dramatic, musical, artistic works, sound recordings, broadcasts, films and typographical arrangement of published editions, rights to control the ways in which their material may be used.
The rights cover; broadcast and public performance, copying, adapting, issuing, renting and lending copies to the public.
In many cases, the creator will also have the right to be identified as the author and to object to distortions of his work.
International conventions give protection in most countries, subject to national laws.
Types of work protected
Literary
song lyrics, manuscripts, manuals, computer programs, commercial documents, leaflets, newsletters & articles etc.
Dramatic
plays, dance, etc.
Musical
recordings and score.
Artistic
photography, painting, sculptures, architecture, technical drawings/diagrams, maps, logos.
Typographical arrangement of published editions
magazines, periodicals, etc.
Sound recording
may be recordings of other copyright works, e.g. musical and literary.
Films
broadcasts and cable programmes.
The Copyright (Computer Programs) Regulations 1992 extended the rules covering literary works to include computer programs.
When rights occur
Copyright is an automatic right and arises whenever an individual or company creates a work. To qualify, a work should be regarded as original, and exhibits a degree of labour, skill or judgement
Interpretation is related to the independent creation rather than the idea behind the creation. For example, your idea for a book would not itself be protected, but the actual content of a book you write would be. In other words, someone else is still entitled to write their own book around the same idea, provided they do not directly copy or adapt yours to do so.
Names, titles, short phrases and colours are not generally considered unique or substantial enough to be covered, but a creation, such as a logo, that combines these elements may be.
In short, work that expresses an idea may be protected, but not the idea behind it.
Who owns a piece of work
Normally the individual or collective who authored the work will exclusively own the work. However, if a work is produced as part of employment then it will normally belong to the person/company who hired the individual.
Freelance or commissioned work will usually belong to the author of the work, unless there is an agreement to the contrary, (i.e. in a contract for service).
Rights cannot be claimed for any part of a work which is a copy taken from a previous work. For example, in a piece of music featuring samples from a previous work, the copyright of the samples would still remain with the original author.
Only the owner, or his exclusive licensee can bring proceedings in the courts.
Duration of copyright
The 1988 Copyright, Designs and Patents Act states the duration as;
For literary, dramatic, musical or artistic works
70 years from the end of the calendar year in which the last remaining author of the work dies.
If the author is unknown, copyright will last for 70 years from end of the calendar year in which the work was created, although if it is made available to the public during that time, (by publication, authorised performance, broadcast, exhibition, etc.), then the duration will be 70 years from the end of the year that the work was first made available.
Sound Recordings and broadcasts
50 years from the end of the calendar year in which the work was created, or,
if the work is released within that time: 50 years from the end of the calendar year in which the work was first released.
Films
70 years from the end of the calendar year in which the last principal director, author or composer dies.
If the work is of unknown authorship: 70 years from end of the calendar year of creation, or if made available to the public in that time, 70 years from the end of the year the film was first made available.
Typographical arrangement of published editions
25 years from the end of the calendar year in which the work was first published.
Broadcasts and cable programmes
50 years from the end of the calendar year in which the broadcast was made.
Restricted acts
It is an offence to perform any of the following acts without the consent of the owner:
Copy the work.
Rent, lend or issue copies of the work to the public.
Perform, broadcast or show the work in public.
Adapt the work.
The author of a work, or a director of a film may also have certain moral rights:
The right to be identified as the author.
Right to object to derogatory treatment.
Acts that are allowed
Fair dealing is a term used to describe acts which are permitted to a certain degree without infringing the work, these acts are:
Private and research study purposes.
Performance, copies or lending for educational purposes.
Criticism and news reporting.
Incidental inclusion.
Copies and lending by librarians.
Acts for the purposes of royal commissions, statutory enquiries, judicial proceedings and parliamentary purposes.
Recording of broadcasts for the purposes of listening to or viewing at a more convenient time, this is known as time shifting.
Producing a back up copy for personal use of a computer program.
Playing sound recording for a non profit making organisation, club or society.
(Profit making organisations and individuals should obtain a license from the Performing Rights Society.)
Useful addresses
The Patent Office
Harmsworth House
13-15 Bouverie Street
London
EC4Y 8DP
Tel: 08459 500 505
www.patent.gov.uk
Performing Rights Society
29-33 Berners Street
London
W1P 4AA
Tel. (0207) 306 4069 -B.C.C.
Tel. (0207) 580 5544 -P.R.S.
www.prs.co.uk
CLA
90 Tottenham Court Road
London
W1P 0LP
Tel. 020 7631 5555
www.cla.co.uk
MCPS
Elgar House
41 Streatham High Road
London
SW16 1ER
Tel. (0208) 664 4400
www.mcps.co.uk
Further reading
The original text for the 1988 Copyright Designs and Patent Act can be found at the OSPI (HMSO) website, but should be read in conjunction with all the relevant updates and statutory instruments.
this is the copyright syibul
Friday, November 17, 2006
the data protecshion act (dpa)
The increasing trend to store vast quantities of such data has worried many people. Some of their concerns are:
Who will be able to access this data? Will information about me be available over the Internet, and therefore vulnerable to hackers? Can my records be sold on to someone else?
Is the data accurate? If it is stored, processed and transmitted by computer, who will check that it is accurate? People often think it must be true if 'it says so on the computer'.
Will the data be sold on to another company? For example, could my health records be sold to a company where I have applied for a job? Could my personal details, collected by my employer, be used by a commercial company for targeting junk mail?
Will data about me be stored even if it is not needed?
In order to address these concerns, the Data Protection Act (1998) was passed.
There are certain terms that you must know for your exam. You may be asked to explain what they mean. They are:
Data Subject
Data User
Data Controller
Data Commissioner
Data Subject
This is the person that the data is being collected from or stored about. This could be you!
Data User
This is any person who needs to access or use the data as part of their job. This could be a secretary who needs to look up your address so that they can send a letter home, it could be a personnel officer who needs to know the medical history of an employee who regularly takes time off sick.
Data Controller
This is often the person in charge of the organisation - but it doesn't necessarily have to be. This person decides what data the organisation needs to collect and what it will be used for. This is the person who must apply for permission to collect and store data in the first place.
Data Commissioner
This is the person who enforces the Data Protection Act. This is the person that organisations need to apply to in order to gain permission to collect and store personal data.
Personal Data
Personal data covers both facts and opinions about a living individual. Facts would include name, address, date of birth, marital status or current bank balance. Results in examinations, details of driving offences, record of medications prescribed and financial credit rating are further examples of facts that could relate to an individual. Personal opinions such as political or religious views are also deemed to be personal data.
Data Controllers must ensure that their organisation follows the eight principles of the Data Protection Act when dealing with personal data.
It is unlikely that you will be asked to know all 8 principles by heart, but you must have an understanding of them and be able to discuss at least three of four of them.
1 Personal data should be obtained and processed fairly and lawfully.
This means that you should be told that data is being collected about you, and you should know what the data will be used for.
2 Personal data can be held only for specified and lawful purposes.
The Data Controller has to state why they want to collect and store information when they apply for permission to be able to do so. If they use the data they have collected for other purposes, they are breaking the law.
3 Personal data should be adequate, relevant and not excessive for the required purpose.
Organisations should only collect the data that they need and no more. Your school needs to know your parent's phone number in case they need to contact them in an emergency. However, they do not need to know what your grandmother's name is, nor do they need to know your eye co lour. They should not ask, nor should they store such details since this would be excessive and would not be required to help with your education.
4 The personal data should be accurate and kept up-to-date.
Companies should do their best to make sure that they do not record the wrong facts about a data subject. Your school probably asks your parents to check a form once a year to make sure that the phone number and address on the school system is still correct.
If a person asks for the information to be changed, the company should comply if it can be proved that the information is indeed incorrect.
5 The personal data should not be kept for longer than is necessary for the purpose for which it is collected.
Organisations should only keep personal data for a reasonable length of time. Hospitals might need to keep patient records for 25 years or more, that is acceptable since they may need that information to treat an illness later on. However, there is no need for a personnel department to keep the application forms of unsuccessful job applicants.
6 Data must be processed in accordance with the rights of the data subjects.
People have the right to inspect the information held on them (except in certain circumstance - see later). If the data being held on them is incorrect, they have the right to have it changed.
7 Appropriate security measures must be taken against unauthorised access.
This means information has to be kept safe from hackers and employees who don't have rights to see it. Data must also be safeguarded against accidental loss.
8 Personal data cannot be transferred to countries outside the European Union unless the country provides an adequate level of protection.
This means that if a company wishes to share data with an organisation in a different country, that country must have similar laws to our Data Protection Act in place.
Tuesday, November 14, 2006
lans and wans
lan is a local area network as in a house or school a wan is a wide area network as in the internet these can be used to camunicate betwean them
star
Hubs connect many lines together.
Switches allow the network manager to connect certain workstations to specific servers.
Advantages:
Reliable - if one connection fails, it does not affect others.
Good performance, fewer data collisions as each workstation has its own line.
Good Security - no workstation can interact with another without going through the server first.
Disadvantages:
Expensive to install - lots of cables required.
Installation is an expert job.
Extra hardware required such as hubs, switches and wiring centres.
Star networks are normally preferred because of their reliability.
ring
The workstations are attached to a cable arranged in a ring
Advantages:
Very fast - all data traffic occurs in the same
direction so there should be no data collisions.
Disadvantages:
If a single machine is switched off then the network does not work. If the cable breaks, once again, the network does not work.
bus
A Bus Network
This is the simplest way to connect workstations, servers and other components of a network by using a single cable. One or more of the workstations act as the File Server, whilst the other machines are used as workstations or terminals.
Advantages:
Cheap
Easy to install.
Disadvantages:
If there is a problem with the cable, the entire network stops working.
If many workstations are using the network at the same time, response can be very slow, thus frustrating users who want to work quickly. The technical term for data trying to travel simultaneously along the cable in different directions is called 'data collision'. A busy network will have many data collisions.
Friday, November 10, 2006
health and safty 2
As computer viruses became more of a menace, companies began to develop software to detect and remove them. These became known as anti-virus software.
There are a number of anti-virus programs available for wiping out viruses.
New and more damaging viruses are being written all the time and so to keep up with these new threats, the anti-virus companies provide constant updates to their software. Normally, you log on to the internet and the software will update itself either automatically or after a certain period set by you.
There is usually a small annual fee involved for this service, but it is a small price to pay for peace of mind. The screen below is a typical anti-virus management screen, it shows the date of the last update, whether you want it to update itself automatically and it also shows when you last carried out a full virus scan.
When the anti-virus software recognises a virus pattern, it will alert the user, and ask them whether they want to remove the virus and clean the system, or whether they simply want to 'quarantine' the virus.
However, there there is a small disadvantage to using anti-virus software. Installing new software can become very awkward as the anti-virus software 'thinks' that there is a virus at large as the new software installs itself into various directories and system areas. This is why installation routines often advise that anti-virus software be switched off during installation.
There are a number of anti-virus programs available for wiping out viruses.
New and more damaging viruses are being written all the time and so to keep up with these new threats, the anti-virus companies provide constant updates to their software. Normally, you log on to the internet and the software will update itself either automatically or after a certain period set by you.
There is usually a small annual fee involved for this service, but it is a small price to pay for peace of mind. The screen below is a typical anti-virus management screen, it shows the date of the last update, whether you want it to update itself automatically and it also shows when you last carried out a full virus scan.
When the anti-virus software recognises a virus pattern, it will alert the user, and ask them whether they want to remove the virus and clean the system, or whether they simply want to 'quarantine' the virus.
However, there there is a small disadvantage to using anti-virus software. Installing new software can become very awkward as the anti-virus software 'thinks' that there is a virus at large as the new software installs itself into various directories and system areas. This is why installation routines often advise that anti-virus software be switched off during installation.
preventshion
Viruses can be prevented by taking sensible precautions, including:
Using anti-virus software to scan your system daily or weekly
Update the scanning software regularly
Not allowing people to load applications \ executable files on your system
Using special filtering software to prevent downloads of computer programs
Scanning all incoming e-mails
Not opening suspicious emails or attachments.
Avoiding software from unreliable sources
Backing up data regularly so you can recover your data with clean copies.
health and safty
You might think that the most valuable item a company owns is its computers. Although they are expensive machines, you would be wrong.
The thing that is worth the most to any company is their data.
Surprising eh? Not when you think about it. If a machine breaks down or even gets stolen, a company can go out and buy a new one to replace it. Yes, it costs them a fair whack, but they can probably find the money from somewhere.
Whereas, if they lose their data, this is very hard to replace. For example they could lose their customer list, lose their sales records, lose their accounts, lose all the information about their product and the list goes on and on.
Data is invaluable to a company and if it were to be lost, the company would probably be crippled in the short term, and go out of business pretty soon afterwards.
It is not just businesses who would suffer from a loss of their data, it could be you.
You have just finished your three pieces of coursework, that took you months to complete. Thank goodness you are going to hand them in tomorrow and get them out of the way.
BUT..... you try to switch on your machine, only to see those awful words 'hard disk failure'. Its all gone.
All of your work was saved on that machine. How much would you pay to get the coursework back so you don't miss your deadline?
This website will look at ways that individuals and companies can protect their data from loss or damage.
The thing that is worth the most to any company is their data.
Surprising eh? Not when you think about it. If a machine breaks down or even gets stolen, a company can go out and buy a new one to replace it. Yes, it costs them a fair whack, but they can probably find the money from somewhere.
Whereas, if they lose their data, this is very hard to replace. For example they could lose their customer list, lose their sales records, lose their accounts, lose all the information about their product and the list goes on and on.
Data is invaluable to a company and if it were to be lost, the company would probably be crippled in the short term, and go out of business pretty soon afterwards.
It is not just businesses who would suffer from a loss of their data, it could be you.
You have just finished your three pieces of coursework, that took you months to complete. Thank goodness you are going to hand them in tomorrow and get them out of the way.
BUT..... you try to switch on your machine, only to see those awful words 'hard disk failure'. Its all gone.
All of your work was saved on that machine. How much would you pay to get the coursework back so you don't miss your deadline?
This website will look at ways that individuals and companies can protect their data from loss or damage.
Friday, November 03, 2006
viries
Computer Virus - this is a phrase coined from biology to describe a piece of software that behaves very much like a real virus (only it spreads from computer to computer rather than people!).
This website will introduce you to what a computer virus is and what can be done to deal with them.
The most common way of getting a virus these days is to open an email attachment. Many viruses have been especially designed to take advantage of the way people send emails to each other.
A Computer Virus is a computer program that is designed to copy itself repeatedly and attach itself to other computer programs.
In the early days of personal computing (1980's) some of the people who created them had a certain misplaced sense of humour. For example, there was a virus that caused all the characters on screen to drop into a heap at the bottom of the display. Very annoying, but relatively harmless.
However, quite soon some really nasty versions came out that were deliberately designed to corrupt and delete your files as well as trying to copy itself everywhere.
Viruses can cause an immense amount of time wasting and financial loss for people and businesses.
For example, the "Melissa" virus was so effective in spreading itself that many huge corporations had to shut down their email systems until the virus could be contained.
To give you a flavour of the nuisance they cause, here is a virus alert bulletin from an email scanning company when the "Mydoom" virus was spreading by email attachments.
From Message Labs, 17 Jan, 2004, http://www.messagelabs.com
* Processing between 50,000 and 60,000 new copies per hour, "W32/Mydoom.A has exceeded the infamous SoBig.F virus in terms of copies intercepted, and the number continues to rise."* Message Labs collected over 1.2 Million copies of W32/Mydoom.A-mm* At its peak infection rate, about 1 in 12 emails on the Internet were MyDoom Viruses
.It is estimated that there are now around 53,000 computer viruses in existence.
The most common way of getting a virus these days is to open an email attachment. Many viruses have been especially designed to take advantage of the way people send emails to each other.
Another way is to load an infected file into your computer from some kind of storage device
floppy disk memory stick CDROM DVD Note: The CD and DVD products from reputable companies are extremely unlikely to contain a virus. It is the personal 'burned' ones that are a potential problem.
It is also possible to pick up a computer virus through what is known as 'peer to peer' file sharing networks. These are internet networks that are used by people to share files amongst each other.
There is often no immediate evidence that a virus has been transmitted to a computer, and the user may remain unaware of it until it causes something to go wrong.
Basically a virus is spread by allowing it to run (technical term: "execute") on your computer, so any executable file or computer program can contain a virus.
This website will introduce you to what a computer virus is and what can be done to deal with them.
The most common way of getting a virus these days is to open an email attachment. Many viruses have been especially designed to take advantage of the way people send emails to each other.
A Computer Virus is a computer program that is designed to copy itself repeatedly and attach itself to other computer programs.
In the early days of personal computing (1980's) some of the people who created them had a certain misplaced sense of humour. For example, there was a virus that caused all the characters on screen to drop into a heap at the bottom of the display. Very annoying, but relatively harmless.
However, quite soon some really nasty versions came out that were deliberately designed to corrupt and delete your files as well as trying to copy itself everywhere.
Viruses can cause an immense amount of time wasting and financial loss for people and businesses.
For example, the "Melissa" virus was so effective in spreading itself that many huge corporations had to shut down their email systems until the virus could be contained.
To give you a flavour of the nuisance they cause, here is a virus alert bulletin from an email scanning company when the "Mydoom" virus was spreading by email attachments.
From Message Labs, 17 Jan, 2004, http://www.messagelabs.com
* Processing between 50,000 and 60,000 new copies per hour, "W32/Mydoom.A has exceeded the infamous SoBig.F virus in terms of copies intercepted, and the number continues to rise."* Message Labs collected over 1.2 Million copies of W32/Mydoom.A-mm* At its peak infection rate, about 1 in 12 emails on the Internet were MyDoom Viruses
.It is estimated that there are now around 53,000 computer viruses in existence.
The most common way of getting a virus these days is to open an email attachment. Many viruses have been especially designed to take advantage of the way people send emails to each other.
Another way is to load an infected file into your computer from some kind of storage device
floppy disk memory stick CDROM DVD Note: The CD and DVD products from reputable companies are extremely unlikely to contain a virus. It is the personal 'burned' ones that are a potential problem.
It is also possible to pick up a computer virus through what is known as 'peer to peer' file sharing networks. These are internet networks that are used by people to share files amongst each other.
There is often no immediate evidence that a virus has been transmitted to a computer, and the user may remain unaware of it until it causes something to go wrong.
Basically a virus is spread by allowing it to run (technical term: "execute") on your computer, so any executable file or computer program can contain a virus.
what i have done so far
we have lernt about wan and lan and wiaerlas (i cant spell) any info would be hellp full
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