Class 9 - Computer Architecture / System - Input - Output - Store - Process

 Class 9 - Computer Architecture / System - Input - Output - Store - Process

1. What do you mean by computer architecture? List the parts of computer system.

Computer architecture or model is a specification detailing how a set of software and hardware technology standards interact to form a computer system. The parts of computer system are hardware, software, data and user.

 

2. What is computer system? Write its basic hardware components.

A computer system is a combination of all the functional components of a computer and its associated hardware that work together to accomplish one or more common goals. Its basic hardware components are input devices, central processing unit, output devices and storage devices.

 

3. What is input unit?

The unit of computer system which is used for entering data and instructions to the computer is called input unit.

 

4. Explain the importance of processing unit.

Processing Unit is the main part of the computer that receives the data and instruction from the input unit and processes those for desired result. This unit is also responsible for processing and controlling the entire operations of computer system. This unit is popularly known as CPU (Central Processing Unit). It is divided into three sections according to the task they perform. They are mentioned below: Memory Unit (MU) as. Arithmetic and Logic Unit (ALU) Control Unit (CU)

 

5. Write the role of ALU in the processing unit.

The role of ALU in the processing unit is to perform operations such as addition, subtraction and multiplication of integers and other logical operations such as the use of AND, OR NOT, >,<,>=,<=,<>, = in logical decisions.

 

6. What are the functions of control unit?

The functions of control unit are:

·       It decides to set the order of instruction to be carried out.

·       It works out what needs to be done to carry the instruction out.

·       It has to tell other parts of the processor what they should do so that the instruction will be carried out

·       It finds the information stored there when it is to be used. It knows where the next instruction in memory stored.

 

7. What is output unit? Is it necessary in computer system?

The unit which displays the results of processing and other information from the computer to user in the human understandable language is called output unit. Yes, it is necessary in computer system because it is the main interface between user and computer hardware to provide the desired results to the user.

 

8. Define the term storage. Why it is require in computer system?

Storage unit is the data storage devices that are used in the computers to store the data. It is required in computer system because the data and program stored in the secondary storage device need to be transferred into the memory unit.