Fundamental of Computer

 What is a computer?

Computer is an electronic device that executes instructions given in a program and controls the operations that are expressible in numerical or logical terms.

Basically, computer has four  functions to perform


  • accepts data input
  • processes data processing 
  • produces output
  • stores the output for further use
The word "computer" has been derived from the Latin word "computerae" meaning "to compute".

Charles Babbage is known as the " father of computer".

What makes a computer powerful?

The power of computer can be judged in the following parameters 

Speed: A computer can be billions of actions per second.

Reliability: A computer can be considered as highly reliable as failures are usually due to human error, one way or another.

Storage: A computer can store large amount of data.

Input Devices: Mouse, Keyboard, Scanner

Output Devices: Printer, Monitor

Processing: CPU ( Central Processing Unit)












Types of Computer:

1. Desktop Computer/Personal Computer(PC)/Laptop: It is used by common People
2. Mainframe Computer: Is is used in Banks, Airlines, Railways to handle millions and trillions of online transactions per second. 
3. Super Computer: It is fastest computer on Earth. 

There are two important part of Computer;

1.  Hardware
2. Software

Hardware: Hardware is which we can touch and feel, it is called Hardware. 

Hardware Component in Computer:

1. Ram: Ramdom Access Memory
2. Rom: Read only memory
3. CPU: Central Processing unit
4. SSD: Solid State Device
5. HDD: Hard Disk Device
6. SMPS: Switched-mode power supply
7. Motherboard
8. USB: Universal Serial Bus

Software: 







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