Computer System Assignment Class 9

 1.Give the full forms of the following abbreviations:

a. CPU b. ALU c. RAM d. SRAM

d. DRAM e. PROM f. EPROM g. EEPROM

2. Match the following:

Group A                         Group B

CPU     The nervous system of the computer

ALU     The brain of the computer system

Control Unit       A memory placed between the CPU and the main memory

EEPROM The component of the CPU where actual computations take place.

Cache Memory A type of ROM in which the stored information is erased by using high voltage of                                    electric pulses.

3. Write the technical term for the following statements:

a. The brain of the computer system, which is responsible for activating and

controlling the operations of other units of the computer system.

b. The nervous system of the computer that controls and co-ordinates the other

components of the computer.

c. The memory of a computer that provides storage for data and instructions on

which the control unit and the arithmetic and logic unit operate.

d. The memory that acts as a high-speed buffer between the CPU and the main

memory.

e. The devices that are used to get output or information from the computer.

4. Select the best alternative for each of the following:

a. The process of entering data and instructions is called

i. controlling  ii. Output  iii. Input  iv. Calculation

b. The device which is used to produce soft output

i. Printer  ii. Hard disk  iii. Monitor  iv. Memory

c. Primary memory of a computer is

i. Hard disk  ii. CDROM  iii. RAM  iv. Floppy disk.

d. The example of the fastest memory is

i. RAM  ii. ROM  iii. Cache  iv. Hard disk

e. Essential computing of computer takes place at

i. Microprocessor  ii. RAM   iii. ROM   iv. Cache

5. Answer the following questions:

a. What is a computer system? What are the main components of a computer system?

b. What are buses?

c. What is an input device? Name any three input devices.

d. What is the CPU? What are the different parts of the CPU?

e. What are the major functions of the CPU?

f. What is ALU? What are the functions of ALU?

g. Explain the functions of the control unit.

h. What is the primary memory? What are the two types of primary memory? Explain in brief.

i. What is the cache memory? Write its function.

j. What is an output device? Name any three output devices.