L-4 Computer Memory /Class-7th Computer Solved Exercise

 

Computer Science

Class-VII

Lesson 4 Computer Memory

A. Fill in the blanks

Non Volatile RAM IPO ROM Input Three

1. Input, Process and Output is also known as IPO cycle.

2. Inout  unit is used to enter our data in Computer.

3. CPU mainly has 3 (three)  components.

4. Primary memory classified into RAM ( Random Access Memory ) and ROM ( Read Only Memory )

5. Secondary memory is non-Volatile  by nature.

B. True or False

1. ALU stands for Arithmetic Language unit.                                                   False

2. Monitor is a part of input unit.                                                                       False

3. RAM is volatile memory.                                                                                  True

4. Cd , Pendrives are example of secondary storage unit.                           True

5. Output unit shows their result in the form of soft copy or hard copy. True

C. Short answer type questions

1. Write four examples of input unit

Ans: Input devices like keyboard, Mouse, joystick, scanner etc.

 

2. Write four examples of output unit.

Ans: Output devices like Monitor, Printer, Speaker, Webcam etc.

 

3. Write name of some secondary storage devices.

Ans: Secondary Storages like Flash,  Floppy Disk,  Zip Disk,  CD+RW, CD+R , DVD+RW . DVD+R,  Storage Tape, Smart Media,  Removable Hard Disc,  Micro Drive,  Memory Stick etc.

 

D. Long answers

1. Differentiate between Input unit and Output Unit

Input Unit	Output Unit
Input unit is the unit through which we can enter our data or instructions into the computer system for further processing	Output unit is used to display the result on the monitor after processing. However the result will be shown in the form of soft copy or hard copy
For entering our data we use many input devices like keyboard, Mouse, joystick, scanner etc.	For taking output we used output devices like Monitor, Printer, Speaker, Webcam etc.

 

2. Differentiate between RAM and ROM

Ans:

RAM	ROM
Random Access Memory	Read only Memory
Volatile Memory	Non Volatile Memory
Stores data and program during and after processing	Stored data and program by manufacturer
Stores information temporarily	Stores instructions (Information permanently)
Processing time is Very fast, but uses a lot of power	Processing time is Fast, but uses very little power

 

3. What do you mean by computer memory also name its parts.

Ans: Memory UnitThe memory unit is the main primary storage unit of

computer. It stores data and instructions when we entered data through input unit. In memory unit data can also be stored permanently for future reference. Computer Memory is classified into two categories:-

 

4. Draw a block diagram of CPU?

Ans: 

 

5. What do you mean by IPO cycle? Explain it with the help of diagram.

Ans: