6th Std Science Term 2 Solution | Lesson.7 Parts of Computer

Lesson.7 Parts of Computer

Parts of Computer Book Back Answers

Lesson.7 Parts of Computer

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 cable
  3. HDMI
  4. USB

Ans : VGA cable

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

  1. Speaker
  2. keyboard
  3. Monitor
  4. Print

Ans : keyboard

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

  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

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

III. Give short answer

1. Name the parts of a computer.

  • Input Unit
  • Central Processing Unit (CPU)
  • Output Unit

2. Write the functions of epiglottis.

Input Device Output Device 
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.
Keyboard, Mouse, Scanner, Barcode reader, Microphone-Mic., Web camera, Light Pen are some of the input devices.Monitor, Printer, Speaker, scanner are some of the output devices

3. Define Central Processing Unit

Central Processing Unit (CPU) CPU is the brain of the Computer. The data is processed in the CPU. The CPU has namely three parts.

  1. Memory Unit
  2. Arithmetic Logic Unit (ALU)
  3. Control Unit

Control Unit

The control unit controls the functions of all parts of the computer.

Arithmetic Logic Unit

Arithmetic and Logic unit performs all arithmetic computations like addition, subtraction, multiplication and division.

Memory Unit

The memory unit in the computer saves all data and information temporarily. We can classify memory unit into two types namely primary and secondary memory. Memory can be expanded externally with the help of Compact Disk (CD), Pendrive, etc

4. Define Wireless Connections

Bluetooth, Wi-Fi are used to connect to internet without using any connecting cables / devices.


Mouse, Keyboard can be connected to the computer using the Bluetooth. Using the Bluetooth the data can be shared with nearby devices


Net connectivity can be obtained using the Wi-Fi without any connecting cables. Any data from anywhere can be shared using Wi-Fi.

5. Write the the different types of cables 

  1. Video Graphics Array (VGA)
  2. High Definition Multimedia Interface (HDMI)
  3. Universal Serial Bus (USB)
  4. Data cable
  5. Power Cord
  6. Mic cable
  7. Ethernet cable


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