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Computer Fundamentals

Computer fundamental chapter gives a quick introduction about computer hardware system, starting from generations of computers, types, characteristics, architecture, CPU, motherboard, RAM, ROM, cables, and ending with disk drives.

Before getting started you should know some of the following definitions:


Computer: An electronic device which takes input from the user, which processes it and gives you the required result in the form of display or print.

Hardware: Hardware are the physical parts of the system, which can be seen and touched by the user.

Software: It is an application program, which performs some operations and gives you desired results.

Network: It is group of interconnected computers or devices to have communication within them.

Programming Language: A software or design logic that controls the system. Use to create application and system softwares.

Operating System: A set of software programs supplied along with hardware for the effective and easy use of machine.

Main parts of system

  • Monitor
  • CPU
  • Keyboard and mouse
  • Motherboard
  • Hard drive
  • Random Access Memory (RAM)
  • Processor
  • Network card, graphic card, sound card
  • DVD-ROM drive
  • SMPS etc.

All the above parts of the system are explained in further points.

Tip Box

Computer doesn't understand human language, it can only understand binary number of 0's and 1's called as bits. Where 0 is low voltage bit and 1 is high voltage bit.


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