If you mean OS systems then that would be Microsoft's windows ( the PC my favorite) apple's Mac and Linux
How Are Computers Used Today?
i-Pods, radios, speakers, television, computers, youtube
There is no direct reference to anything remotely resembling what we call computers today. However, any phrases that involve maths, or people doing maths, would have needed an abacus or a pile of stones; these were the first computers ever created and commonly used.
Computers in the 1950s were much slower compared to modern computers. They had processing speeds measured in kilohertz (thousands of cycles per second) or even less, whereas today's computers commonly operate in gigahertz (billions of cycles per second). The average processing power was limited by the technology of the time, with rudimentary transistor-based machines that were much less powerful than today's silicon-based processors.
security,memory management and file management
So that people can go on wikianswers and find out why computers are made today
Today.
Extremely.
Visual Basic is used on windows computers for just about any task though they are usually but not always simple.
People need computers so they can help them research important thesis
Nonfiction writing is of little importance today because of the widespread use of computers.
The most commonly use cbis is microcomputers, and they consists of personal computers (PC) like desktops computers, and laptops. Although big government company's still uses Super computers and Mainframe computers, you will find the microcomputer more affordable, efficient and capable of performing most of the tasks that is required off.