Question

1. The diagram in Figure 1 is the system unit of a computer.

(a) Identify the parts labelled: (i) X (ii) Y (iii) Z
(b) State one use of the parts labelled: (i) X (ii) Y (iii) Z
(c) List four internal components of the system unit shown in Figure 1.

Accepted Answer

(a) (i) X — Optical (CD/DVD) drive (ii) Y — Power button (iii) Z — USB ports

(b) (i) X — Used for reading from or writing to a CD/DVD (ii) Y — Used to turn the computer on or off (iii) Z — Used to connect external devices like flash drives, keyboards and printers to the system

(c) Any four: (i) Central Processing Unit (CPU) (ii) Random Access Memory (RAM) (iii) Motherboard (iv) Fan (v) Network Interface Card (NIC) (vi) Hard drive

WAEC Computer Studies 2025 Theory — Question 1

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