Know your Computer (Basics)
What is a computer? Computer is an electronic machine that outputs the information or completes a task that is given to the computer by an input device.
for example what you type on your keyboard is displayed on your screen as the result of your typing task.
Basically a computer is made up of a CPU- Central processing unit (works as a brain)
Input devices: like keyboard, mouse etc.
Output devices like monitor(your screen)
You also add some optional devices like speakers, microphone, UPS(battery as backup when there is power cut, if you want to maintain your computer well you will need an UPS).
Computers are mainly divided into:
1. Supper computer:
Supper computers are fastest computers available now these are used for making large amount of calculations these are also used for weather forecasting, Scientific stimulation, Graphics etc.
2. Mainframe
Mainframes are used for large scale computing processes that requires great availability and security than a small scale machines can offer. Mainframes colloquially are referred as big iron.
3. Minicomputer
A computer that has power more than microcomputer but less than a mainframe. This is evolved into the mid range server. Supports up to 200 users.
4. Workstation
Workstations are mostly used for engineering applications has high RAM and Graphics.
5. PC or Personal Computer
PC is a microcomputer designed for use by one person at a time.
Types of PC
1. Tower model
2. Desktop model
4. Laptop computer
5. Hand-held computer
7. PDA
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