Computer Fundamentals

Introduction

Computer Fundamentals is the study of basic structure, operations and functions of computer systems. A computer is an electronic machine that processes data, performs calculations, and solves problems at high speed and accuracy.

Definition of Computer

Computer is an electronic device that accepts data (input), processes it according to instructions (process), and gives the result (output).
IPO Cycle: Input → Processing → Output

Main Components of Computer

• Input Unit (e.g. keyboard, mouse, scanner)
• Output Unit (e.g. monitor, printer, speaker)
• CPU (Central Processing Unit)
• Memory Unit (RAM and ROM)

Basic Terms

• Hardware: Physical parts - monitor, keyboard, CPU, printer
• Software: Programs and applications - Windows, MS Word, Photoshop
• Data: Raw facts and figures that are processed by the computer
• Information: Processed data which has meaning and is useful

Uses of Computers

• Education
• Business
• Banking
• Health Care
• Designing & Animation
• Research

Generations of Computers

Computers have evolved in generations:
1st Generation: Vacuum Tubes
2nd Generation: Transistors
3rd Generation: Integrated Circuits
4th Generation: Microprocessors
5th Generation: Artificial Intelligence (AI)

Important Points

• Computers are reliable, fast and accurate.
• They do not have intelligence or emotions, only process instructions.
• Require electricity, input and instructions to operate.