What is a Computer?
A computer is an electronic machine that accepts data, processes it, and gives output in a useful form.
👉 Computer = Input → Process → Output
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Main Parts of a Computer
1. Hardware
Physical parts you can touch. Examples:
Keyboard, Mouse, Monitor, CPU, Printer, Scanner
2. Software
Programs that tell the computer what to do. Examples:
Windows, MS Word, Excel, Browser
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Basic Units of Computer
1. Input Unit
Used to enter data. Examples: Keyboard, Mouse, Scanner
2. Processing Unit (CPU)
Brain of the computer.
ALU (calculations)
Control Unit (controls all operations)
3. Output Unit
Shows results. Examples: Monitor, Printer, Speaker
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Types of Computers
1. Desktop Computer
2. Laptop
3. Tablet
4. Smartphone
5. Supercomputer
A computer is an electronic machine that accepts data, processes it, and gives output in a useful form.
👉 Computer = Input → Process → Output
---
Main Parts of a Computer
1. Hardware
Physical parts you can touch. Examples:
Keyboard, Mouse, Monitor, CPU, Printer, Scanner
2. Software
Programs that tell the computer what to do. Examples:
Windows, MS Word, Excel, Browser
---
Basic Units of Computer
1. Input Unit
Used to enter data. Examples: Keyboard, Mouse, Scanner
2. Processing Unit (CPU)
Brain of the computer.
ALU (calculations)
Control Unit (controls all operations)
3. Output Unit
Shows results. Examples: Monitor, Printer, Speaker
---
Types of Computers
1. Desktop Computer
2. Laptop
3. Tablet
4. Smartphone
5. Supercomputer
