What is Computer system Architecture?-Computer System Architecture|UGC NET Computer Science notes

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In this post,let us understand about the computer system architecture.

Introduction:

Simply say, Computer System Architecture is the blueprint of a computer system.

Blueprint  means what is inside and how it works.

Let us learn about the computer system architecture.

We can divide the computer system architecture into three parts.

• Computer Design
• Computer  Organization
• Computer  Architecture

Computer Design:

• Computer  design is concerned with the hardware design of the computer.
• Computer design is concerned with the determination of what hardware should be used and how the parts should be connected.

Explanation:

 

The above points explain about the concept of computer design.

1. In computer design, First we should have clear idea about what to do.
2. Then, developers decide what hardware components are needed and how they should be connected to build an efficient computer.
3. Computer design also focus cost, performance and power consumption.

Example:

Designer sit together and plan the system

They decide:

Which processor to use?

How much RAM is needed?

Computer  Organization:

• Computer Organization is concerned with the way hardware components operate and the way they are connected together to form the computer system.

Explanation:

The above points explain about the concept of the computer organization.

1. In computer organization,we learn how the hardware components are connected and how they work together.
2. It focuses only internal structure of  the computer system.
3. It shows how the CPU/memory, input and output  devices work together.
4. It helps in improving speed and performance of the system

Example:

After selecting the parts,engineers connect them inside the laptop.

They arrange:

How CPU connect with RAM

How data moves through buses

How input and output devices work

Computer Architecture:

• Computer Architecture is concerned with the structure and behavior of the computer as seen by the user.
• It is concerned with the various specifications of the functional modules,such as processor,memories and structuring them together into a computer system.

Explanation

The above points explain about the concept of the computer architecture.

1. Computer Architecture defines how the system appear to the user.
2. It specifies the instructions set of the processor.
3. It helps programmers to write efficient programs.

Example:

The laptop is given to user.

Now the user sees:

Windows support

Fast performance

64 bit system

Simply I say in one line for these parts

• Design: what is inside.
• Organization:how it is connected.
• Architecture:how it appears.

Conclusion:

I hope,this post helps you to understand about the computer system architecture.This subject is very easy and most interesting topics in computer science.As a computer science student,you should understand this computer system architecture subject clearly.I will explain each topic in this subject in simple and clear way in future posts.