Class-6 Chapter-2 Solved Exercise

 

Chapter-2

A. Tick ( ) Mark the correct Option

1. It is used for calculating and comparing:

Ans.  a. ALU

2. The physical devices that we can touch and feel are called _______.

Ans.  b. hardware

3. The _______ of a computer includes Arithmetic Logic Unit and the Control Unit.

Ans.  c. CPU

4. The Full form of ROM:

Ans.  c. Read Only Memory

B. Fill in the blanks

1. The computer mainly works on two components: Hardware and Software.

2. External memory is known as Secondary Memory too.

3. The main memory consists of Primary and Secondary Memory .

4. ROM is the non-volatile memory of the computer.

5. RAM  is read/writable memory of the computer.

C. Short Questions.

Q.1.  What do you mean by input device?

Ans.  Input Devices receive input from the user in the form of raw data.

Q.2 What is the full form of ALU? What is its function?

Ans.  ALU ( Arithmetic and logical Unit)

Arithmetic operations include all (+, - , /, *) etc. and all logical operations are those operations which involve logical operators (NOT, AND, OR) and result in True or False.

Q.3 Write about the function of the control unit.

Ans. Control Unit ensures that all the other parts of the processor do whatever is instructed to them.

D. Long Questions ;-

Q.1 Which two functions does the arithmetic and logic unit perform?

 Ans. Arithmetic operations include all (+, - , /, *) etc. and all logical operations are those operations which involve logical operators (NOT, AND, OR) and result in True or False.

Q.2 How does increase in size of RAM increase the speed of the computer?

Ans.  RAM leads to the increase in the data which we can store at one point of time. It enables us to run multiple programs simultaneously.

E. Give the difference between :

Q.1 Input Device and Output Device.

Ans.       Input Device : Input Devices receive input from the user in the form of raw data.

                Output Device : Output Devices are mainly used to display information (Output) to the user.

Q.2 Primary memory and Secondary Memory.

Ans.       Primary Memory: A primary memory (internal memory) is the main memory of the computer.

                Secondary Memory : Secondary Memory is also known as external Memory. Normally, it stores the information for much longer time.

F. Name any two:

Q.1 Components of a computer

Ans.   Hardware  and Software

Q.2 Memory Chip

Ans:  Primary and Secondary Memory

G. Give the full form of :

1. CPU – Central Processing Unit

2. RAM – Random Access Memory

3. ALU – Arithmetic Logical Unit

4. ROM – Read only Memory