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.
