Paper 2 · Computer system architecture
Which of the following is NOT one of the five basic hardware components of a computer system?
ACompiler software
BInput devices, such as a keyboard, mouse or scanner used to enter data
COutput devices, such as a monitor or printer used to present processed results
DBacking storage
Explanation: The five basic hardware components of a computer system are input devices, the CPU (control unit, ALU and memory), output devices and backing storage. A compiler is system software, not a hardware component.
Derived from ZIMSEC Computer Science 4021/2 Paper 2, November 2020, Q1

