In the US, Evey 5 People Have A Computer, 3-4-5 Is the Average size of a US Family.
Thank You
Perhaps this link could help answer it some: http://www.census.gov/prod/2005pubs/p23-208.pdf
This is a link to internet a computer use in 2003. It is the up-to-date I have found.
Interesting side note. My father worked for IBM in late 60's and a memo was sent out stating that by the year 2000 as many as 6 systems may be in place in the Milwaukee area. They underestimated a little.
They don't. They affect your computer.
It scans your computer for viruses
No
There are many ways one can remove a trojan virus from one's computer. One can remove a trojan virus from their computer by downloading a virus removal software such as Sophos.
To prevent virus in computer you can use some antivirus apps and being very careful about clickable links.
There were many viruses in 1999 and not a one single virus
Every computer could have a virus but if you use your computer carefully it can be impossible for the virus to come to your computer.
20 Common Types of Viruses Affecting Your Computer. When we talk about computer security, the virus is the leading threat. It can destroy a single program or the whole computer system instead
Scanning virus only help to find the virus inside your computer disks, but do no other actions, virus is still in your computer. But Removing virus not only find it, but also remove the virus from your computer. Thus no such virus will remain in your computer after that.
Virus-L and computer virus are discussions forums which focus on computer virus issues
back uses of computer virus
Virus can spread by many way, depends on the hacker who made it. Some virus will infect your computer immediately when you visit a website. But some are harmless until you click on file which was infected. There are many type of virus nowadays: trojan, macro, rootkit,....you can find more information on norton, kaspersky site.