logo

Exam-style practice

The main components of computer systems answer explanations

Review worked answers and explanations for The main components of computer systems. Aligned to Cambridge IGCSE Information and Communication Technology.

Answer explanations

Question 1 of 2

Review the answer support, then move sideways through the set.

Paper 1 structured question: The main components of computer systems

Paper 1Theory6 marks

Description

CPU and Memory Functions

The CPU executes instructions to process data and produce output. Internal memory includes ROM, which stores permanent instructions, and RAM, which temporarily holds data and programs currently in use.

  1. a

    Describe the function of the CPU in a computer system.

    [2]
  2. b

    Compare ROM and RAM in terms of their characteristics and uses.

    [4]