Types of computers

Computers are typically classified based on their uses:

Based on uses

• Analog computer
• Digital computer
• Hybrid computer

Based on sizes

• Micro computer
• Personal computer
• Mini Computer
• Mainframe computer
• Super computer

Input Devices

When unprocessed data is sent to the computer with the help of input devices, the data is processed and sent to output devices. The input devices may be hand-operated or automated. The act of processing is mainly regulated by the CPU. Some examples of hand-operated input devices are:

• Overlay keyboard
• Trackball
• Joystick
• Digital camera
• Microphone
• Touchscreen
• Digital video
• Image scanner
• Graphics tablet
• Computer keyboard
• Mouse

Output Devices

The means through which computer gives output are known as output devices. Some examples of output devices are:

• Computer monitor
• Printer
• Projector
• Sound card
• PC speaker
• Video card

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