There are literally thousands of different viruses, but the most common ones are - Trojans, these are disguised as a different program, but when opened, they infect your computer - Worms, if your computer gets one of these, they replicate and embed themselves in various places on your computer, making it hard to get rid of
Yes viruses of all kinds (spyware, adware, etc.) can all make your computer slow, unresponsive, and laggy. I would recommend getting an antivirus program such as Norton or MacAfee.
YOU don't infect other computers with viruses.
yes
Yes, but all home computers can get viruses.
all of them
You can get them in web pages, for example cookie viruses.
SCAN THE COMPUTERS AND REMOVE ALL THE SPYWARE AND VIRUSES ON YOUR COMPUTER
9 infected:10 computers
Viruses destroy computers,BUT Anti-Viruses destroy viruses.
Mostly they plant malware on computers. Malware covers all kinds of malicious software designed specifically to do some damage to computers and networks. The kind of malware you may be thinking of are viruses. A virus is malware that can duplicate itself and spread throughout networks. There are many other kinds of malware out there. If you want to read more about malware you can look it up on wikipedia. Google also has some information here.
On computers
No. Computer viruses use lines and strings of code.