9th Std Science Solution in English | Lesson.27 Parts of Computer

Lesson 27 Parts of Computer

Parts of Computer Book Back Answer

I. Choose the correct answer

1. Which one of the following is an output device?

  1. Mouse
  2. Keyboard
  3. Speaker
  4. Pendrive

Ans: Speaker

2. Name the cable that connects CPU to the Monitor

  1. Ethernet
  2. VGA
  3. HDMI
  4. USB

Ans: VGA

3. Which one of the following is an input device?

  1. Speaker
  2. Mouse
  3. Monitor
  4. Printer

Ans: Mouse

4. Which one of the following is an example for wireless connections?

  1. Wi-Fi
  2. Electric wires
  3. VGA
  4. USB

Ans: Wi-Fi

5. Pen drive is device.

  1. Output
  2. Input
  3. Storage
  4. Connecting cable

Ans: Storage

II. Match the following:

VGAInput device
1. BluetoothConnecting cable
2. PrinterInput device
3. KeyboardWireless connection
4. HDMIOutput device
5. VGAIt connects monitor, projector with the computer
Ans : 1 – C, 2 – D, 3 – B, 4 – E, 5 – A

III. Short answer

1. Name the parts of a computer.

  1. Input Unit
  2. Central Processing Unit (CPU)
  3. Output Unit

2. Bring out any two differences between input and output devices.

Input DeviceOutput device
1. The input unit helps to send the data and commands for the processing. The devices that are used to input data are called input devices.The output unit converts, command received by the computer in the form of binary signals into easily understandable characters.
2. Keyboard, Mouse etc., ,Monitor, Printer etc.


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