Input & Output Devices - Computer MCQs and Notes for PST JEST EST Jobs

 Input & Output Devices - Computer MCQs and Notes for PST JEST EST Jobs

Simple notes on input and output devices of a computer with 10 important MCQs for PST, JEST and EST jobs test in Sindh. Practice online now.

Input & Output Devices of Computer

Computer Notes and MCQs for PST, JEST and EST Jobs

Theory and Key Notes

• Input devices send data and instructions into the computer: keyboard, mouse, scanner, microphone, joystick, webcam, barcode reader.
• Output devices show the result of processing: monitor, printer, speaker, projector, plotter.
• Hard copy is output on paper (printer, plotter). Soft copy is output on screen or as sound (monitor, speaker).
• Input/Output (both) devices: touch screen, modem, headset with microphone.
• CPU (Central Processing Unit) is the brain of the computer. It has the ALU, Control Unit and registers.
• Mouse is a pointing device. OMR reads marked bubbles, MICR reads cheque numbers, OCR reads printed text.

10 Important MCQs (Click on an answer)

Score: 0 / 10

1. Which of the following is an input device?

A. Monitor

B. Printer

C. Keyboard

D. Speaker

2. Which of the following is an output device?

A. Scanner

B. Monitor

C. Mouse

D. Joystick

3. A mouse is a:

A. Pointing device

B. Output device

C. Storage device

D. Printing device

4. Output on paper is called:

A. Soft copy

B. Hard copy

C. Data

D. Software

5. A scanner is used to:

A. Print documents

B. Play sound

C. Convert paper documents into digital form

D. Store data

6. A speaker is an:

A. Input device

B. Output device

C. Storage device

D. Processing device

7. Which device is both input and output?

A. Touch screen

B. Keyboard

C. Printer

D. Plotter

8. A projector is used for:

A. Input

B. Output

C. Storage

D. Processing

9. The brain of the computer is the:

A. Monitor

B. RAM

C. CPU

D. Mouse

10. Which device is used to draw large engineering drawings?

A. Plotter

B. Scanner

C. Microphone

D. Webcam

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