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3. Identify the key to erase letters on the left side of the cursor.

(i) Shift (ii) Tab

(iii) Enter (iv) Backspace

4. Select the key used in combination with other keys to perform special actions.

Esc Delete
(i) (ii)

(iii) Ctrl (iv) Backspace

5. Which of the following is a function key?

(i) Shift (ii) Alt

F1 Num
(iii) (iv) Lock

B. Write for true and for false.

1. When Num Lock is ON, you can use the Numeric keypad to
type numbers.

2. The Enter key is the longest key on the keyboard.

3. An optical mouse connects to the computer using a wire only.

4. The Delete key is used to erase text on the right side of the cursor.

5. Double-clicking a button is used to move objects on the screen quickly.

C. Fill in the blanks using the given hints:
1. The keys help move the cursor up, down, left or Hints

right. Left-click

2. An mouse has an LED sensor that helps the Drag
pointer to move. Optical
Arrow
3. The key is used to open the Start Menu on your Windows
computer.

Keys to Type, Mouse to Guide 31