by 
The Curious Bag
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Whether it is a quadratic equation, video, a picture or a Tweet, it is data. If it needs to be somewhere, you need to transfer it. Use a computer to do that and it's called a data transfer.
What data does a computer transfer?
Computers do not communicate in the words and pictures humans see on a monitor. The only language computers use is called binary. It looks like this: 01101000 01100101 01101100 01101100 01101111. That is "hello" in binary code. Everything done with a computer becomes binary code and that is what is transferred.
When does a computer transfer data?
Computers constantly transfer data. When a computer starts, it transfers data from the BIOS (basic input/output system). When the OS (operating system) begins, it transfers data from the hard drive to the CPU (central processing unit).
Are there different kinds of data transfer?
When computers are connected over a network and move files from one another or when you visit a website, that is transferring data. Saving a file to a hard drive is also transferring data.
Can data transferring be dangerous?
Transferring data is the most common way for a computer to become infected with viruses, spyware, malware and Trojan horses.
Can dangerous transfers be stopped?
Programs designed to look at files before a computer accepts them can stop infected data transfers. The best defense, however, is a computer user who does not accept data from unknown sources.
Source:
"Computers 101" Jose Damien 2005
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