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REVISIT
▶ A mouse is an input device used to point at or select an item on the monitor.
▶ A mouse can be used to perform various tasks such as single-click, double-click,
right-click, dragging and scrolling.
▶ A keyboard is an input device that consists of various keys: Alphabet keys,
Number keys and Special keys.
▶ Caps lock key is used to type text in upper case.
▶ Cursor control keys are used to move the cursor up, down, left and right.
▶ Tab key moves the cursor to the right by many spaces.
▶ Esc or Escape key is used to close a menu or a dialog box.
ASSESS YOURSELF
1. Tick ( ) the correct option.
a. How many keys does a standard keyboard have?
(i) 320 (ii) 250 (iii) 104
b. Which key is used to close a menu or a dialog box?
(i) Escape key (ii) Caps lock key (iii) Delete key
c. Pressing the left mouse button once is called a ____________.
(i) Scrolling (ii) Single-click (iii) Double-click
d. Which of the following is not a special key?
(i) Tab key (ii) Enter key (iii) ‘5’ number key
2. Fill in the blanks using the words from the help box.
mouse, two, Enter
a. A is an input device.
Using a Mouse and a Keyboard 47

