8th Std Science Term 1 Solution in English | Lesson.9 Introduction to the Information Age

Lesson 9. Introduction to the Information Age

 Introduction to the Information Age Book Back Solution

Lesson 9. Introduction to the Information Age

I. Choose the correct answers:

1. Who is the father of computer?

  1. Martin Luther King
  2. Graham Bell
  3. Charlie Chaplin
  4. Charles Babbage

Ans : Charles Babbage

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

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

Ans : Speaker

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

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

Ans : Keyboard

4. Pen drive is ____________device.

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

Ans : Storage

5. Fifth generation computer has ___________ Intelligence.

  1. Transistors
  2. Integrated Circuits
  3. Microprocessor
  4. Artificial Intelligence

Ans : Artificial Intelligence

II. Match the following

1. KeyboardRAM
2. Fourth generation ComputerInput device
3. HardwareIntegrated Circuits
4. Third generation ComputerDrawing tools
5. Application SoftwareMicroprocessor
Ans : 1 – b, 2 – e, 3 – a, 4 – c, 5 – d

III. Give short Answer

1. What t is a Computer?

Computer is an electronic device storing processes data  typically in binary from, according to instructions given to it in a variable program

2. Name the parts of a computer

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

3. What is Hardware and Software?


Hardware is the parts of a computer which we can touch and feel. Hardware includes Input and Output devices, Cabinet, Hard Disk, Mother Board, SMPS, CPU, RAM, CD Drive and Graphics Card.


Hardware is lifeless without software in a computer. Softwares are programmed and coded applications to process the input information. The software processes the data by converting the input information into coding or programmed language. Touching and feeling the software is not possible but we  can see the functions of the software in the form of output.

4. Define Generation of Computers.

1. First generation1942-1955Vacuum tubes
2. Second generation 1955-1964 Transistors
3. Third generation1964-1975Integrated Circuits( IC)
4. Fourth generation1975-1980Microprocessor
5. Fifth generation1980 – till dateArtificial Intelligence

5. Describe the components of the Central Secretariat (CPU)

CPU is the brain of the Computer. Th e data is processed in the CPU. The CPU has namely three parts.

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

Control Unit

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

Arithmetic Logic Unit

Arithmetic and Logic unit performs all the 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.

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