Institute of Commercial Management | Qualification Subject

Computer Systems

ICM Professional Diploma Unit

This qualification is a new Single Subject and will be awarded as a Single Subject Certificate from June 2023.

Main Topics of Study:

Introduction to Computer Science

  • The history of computing
  • The role of algorithms

Data Storage

  • Bits and their storage
  • Main memory
  • Mass storage
  • Representing information as bit patterns
  • Binary system
  • Storing integers
  • Storing fractions
  • Data and programming
  • Data compression
  • Communication errors

Data Manipulation

  • Computer Architecture
  • Machine language
  • Program execution
  • Arithmetic and logic instructions
  • Communication and other devices
  • Programming data manipulation
  • Other designs

Operating Systems

  • History of operating systems
  • Operating system design
  • Coordinating machine activities
  • Competition
  • Security

Networking and Internet

  • Network fundamentals
  • Internet
  • World Wide Web
  • Internet protocols
  • Simple client server
  • Cybersecurity


  • The concept
  • Representation
  • Discovery
  • Iterative structures
  • Recursive structures
  • Efficiency and correctness

This unit is part of the ICM Level 5 Diploma in Computer Science and Cyber Security

Example Candidate Response Booklet

Example Candidate Response (ECR) Booklets are a source of crucial information for Centres and Candidates as they use real candidate responses. We ask Senior Examiners to comment on five or more responses in terms of why the mark was awarded with commentary about how to improve the answer (if necessary).

Recommended Reading

Main Text:

Glenn Brookshaw, J, Brylow, D. (2020). Computer Science, an overview, 13ed. Harlow: Pearson Education Limited

Indicative Text:

Alternative Text and Further Reading: