1.2 Input Devices

 

1.2 Input Devices

 

Input devices are hardware components of a computer system used to enter data and instructions into the computer. They convert human-readable data into machine-readable form for processing.

 

Examples of Input Devices:

Mouse

Keyboard

Joystick

Microphone

Scanner

Webcam

Touchscreen

Touchpad

 

Mouse

A mouse is a handheld pointing input device used to select and control objects on the computer screen. It is mainly used with GUI-based systems for pointing, clicking, dragging, and scrolling. It has left, right, and scroll buttons.

 

Keyboard

A keyboard is an input device used to enter text, numbers, and commands into a computer by typing. A standard keyboard has 104 keys and the most common layout is QWERTY, named after the first six keys of the top row. Types of Keys on a Keyboard: Alphabet keys: A to Z, Numeric keys: 0 to 9 and mathematical symbols, Function keys: F1 to F12, Cursor movement keys: Arrow keys

Special purpose keys: Enter, Spacebar, Shift, Ctrl, Alt, Delete

 

Joystick

A joystick is an input device mainly used for playing video games and simulation systems. It consists of a movable stick that detects direction and movement and has buttons for game control.

 

Microphone

A microphone is an input device used to enter sound or voice into a computer. It converts sound waves into digital signals and is used for voice recording, online meetings, and video conferencing.

 

Scanner

A scanner is an input device used to convert printed documents or images into digital form. It is commonly used for digitizing text and photographs.

 

Webcam

A webcam is an input device used to capture live images and videos. It is mainly used for video calls, online classes, and video conferencing.

 

Touchscreen

A touchscreen is an input device that allows users to give input by touching the display screen directly. It is commonly used in smartphones, tablets, and ATMs.

 

 

Touchpad

A touchpad is a touch-sensitive pointing input device commonly found on laptops. It is used to control the cursor and works like a mouse.

 

📘 1.2 Input Devices - MCQs

1. Which task is most efficiently performed using a mouse?

A. Typing a document            B. Recording sound    C. Dragging and dropping icons ✅   D. Scanning text

2. The main purpose of a keyboard is to:

A. Capture images                  B. Enter text and commands ✅        C. Record sound            D. Control cursor

3. Function keys on a keyboard are labeled as:

A. A1–A12                              B. Ctrl keys                             C. F1–F12 ✅            D. Arrow keys

4. A joystick is mainly used for:

A. Typing        B. Playing games and simulations ✅  C. Scanning documents       D. Video conferencing

5. A microphone is used to input:

A. Images                               B. Text                                    C. Sound ✅                           D. Video

6. A scanner converts:

A. Digital data into paper                                                       B. Paper documents into digital form ✅
C. Sound into text                                                                   D. Video into images

7. A touchscreen accepts input through:

A. Keyboard only                   B. Mouse only                        C. Touch on screen ✅            D. Voice

8. A touchpad is commonly found in:

A. Desktop computers            B. Printers                               C. Laptops ✅                        D. Servers

9. Which input device does not require physical movement on a surface?

A. Mouse                                B. Touchpad                            C. Joystick                  D. Touchscreen ✅

10. A standard keyboard generally has:

A. 84 keys                               B. 90 keys                               C. 104 keys ✅                       D. 120 keys

11. QWERTY is called so because:

A. It is fastest layout                                                               B. It is the newest layout
C. It is named after first six top-row letters ✅                     D. It is named after inventor

12. Which device is used for video calling as video input?

A. Keyboard                           B. Mouse                                C. Webcam ✅                       D. Scanner

13. Which input device is built into most laptops for cursor control?

A. Joystick                              B. Touchpad ✅                     C. Scanner                  D. Microphone

14. Touchpad performs the same function as a:

A. Keyboard                           B. Mouse ✅                          C. Scanner                  D. Speaker

15. Which of the following is NOT an input device?

A. Mouse                                B. Keyboard                            C. Scanner                  D. Printer ✅

16. Which device acts as both input and output device?

A. Mouse                                B. Keyboard                            C. Touchscreen ✅                 D. Scanner

17. Which input device is MOST suitable for entering hand-drawn pictures into a computer?

A. Mouse                                B. Scanner ✅                        C. Keyboard                D. Webcam

18. Which input device reduces the need for both keyboard and mouse?

A. Touchpad                           B. Scanner                              C. Touchscreen ✅                 D. Joystick

19. Which input device is generally used in laptops instead of an external pointing device?

A. Mouse                                B. Touchpad ✅                     C. Joystick                  D. Scanner

20. Which input device is MOST suitable when a user needs to interact with a computer without using any physical buttons or keys?

A. Mouse                                B. Keyboard                            C. Touchscreen ✅                 D. Scanner

What are input devices? Write any two functions of a mouse.

What is a keyboard? Name any four types of keys found on a keyboard.

What is a joystick? How is a touchpad different from a mouse?

Define a mouse. What is a microphone used for?

What is a scanner? Write two uses of a webcam.