You must complete Overview of a Computer System to unlock this Lesson.



  1. Computer Hardware
  2. Computer Software
  3. Characteristics of a Computer


Computer Hardware

Meaning of Computer Hardware

Computer hardware is the collection of physical elements that constitute a computer system. Computer hardware refers to the physical parts or components of a computer such as monitor, keyboard, hard drive disk, mouse, CPU (graphic cards, sound cards, memory, motherboard and chips), etc. all of which are physical objects that you can actually touch.

Components of the Computer Hardware

Computer hardware is divided into two main categories namely:

  • System unit, and
  • Peripherals

The System Unit

The system unit is the electronic components such as CPU, primary memory and other devices that are used to process and store data. It is the computer casing or cabinet that contains the Central Processing Unit (CPU) and many other electronic components. It contains many hardware components that can be seen only when the case or cabinet is open.

Lesson tags: Computer Science Lesson Notes, Computer Science Objective Questions, SS1 Computer Science, SS1 Computer Science Evaluation Questions, SS1 Computer Science Evaluation Questions First Term, SS1 Computer Science First Term, SS1 Computer Science Objective Questions, SS1 Computer Science Objective Questions First Term
Back to: COMPUTER SCIENCE/ICT – SS1 > First Term
© [2022] Spidaworks Digital - All rights reserved.