- A computer is a programmable electronic device that can perform arithmetic and logical operations. By taking a set of instructions in sound defined manner then it can carry out your desired output from its memory.
- Computers can be classified by its power and work.
- Personal Computer (PC) a single user designed computer based on microprocessor technology.
- Minicomputer is a multi user computer competent of supporting from ten to hundreds of users concurrently.
- Mainframe computers are a powerful multi user computer that can able to run hundreds or thousands of computers all together.
- Super computer an enormously fast computer that can perform millions of instructions in a second.
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