Question

3. (a) Describe the computer keyboard.
(b) List four types of keys on a computer keyboard.
(c) State the function of each of the following shortcut key combinations: (i) Shift + Delete (ii) Alt + F4
(d) Name the shortcut key combination for performing the following tasks: (i) highlighting an entire text in a document (ii) previewing a document before printing

Accepted Answer

(a) The computer keyboard is an input device made up of a set of keys arranged in a specific layout. Each key corresponds to a particular character, number or function, and when pressed, sends a signal to the computer. It is the primary means of entering text, commands and data into a computer.

(b) Any four: Alphanumeric keys, Function keys, Modifier keys, Navigation keys, Numeric keypad.

(c) (i) Shift + Delete: This permanently deletes the selected item without sending it to the Recycle Bin.
(ii) Alt + F4: This closes the current active window or program.

(d) (i) Ctrl + A — highlights/selects the entire text in a document. (ii) Ctrl + P — previews a document before printing.

WAEC Computer Studies 2025 Theory — Question 3

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