Computer Fundamentals Notes

Input and Output Devices

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What is an Input Device?

An Input Device is a hardware device used to enter data and instructions into a computer. The computer receives information through these devices.

Common Input Devices

1. Keyboard

A keyboard is used to type letters, numbers, and symbols.

 

Main parts of keyboard:

• Alphabet keys
• Number keys
• Function keys (F1–F12)
• Arrow keys
• Spacebar
• Enter key

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2. Mouse

A mouse is a pointing device used to select items on the screen.

 

Parts of mouse:

• Left button
• Right button
• Scroll wheel

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3. Scanner

A scanner converts paper documents or photos into digital form.

 

Use: Scanning documents, photos, and certificates.

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4. Microphone

A microphone is used to enter voice or sound into the computer.

 

Use: Recording voice, online classes, video calls « Previous