What is Computer Architecture?
It is a theory behind the operational design of an operating system and the practical part of selecting and interconnecting hardware component to create a computer that need functional performance and cost goal.
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| Computer Architecture |
Computer Architecture covers 4 main sub-categories. These categories are as follows:-
1. Instruction Set
2. Micro-Architecture
3. System Design
4. History
Now, we shall define each of the above stated categories.
1. Instruction Set:- It is a code that a central processor reads and acts upon, it is the machine language including the instruction set, word size, memory address mode, processor, processor register and data format.
2. Micro Architecture: - It is also known as computer organization, describe the data path, data processing element and storage element and describe how they should implement ISA.
3. System Design:- It includes all other hardware component within a computing system, includes data path such as computer buses and switches, memory controller, data processing other than CPU such as direct memory access.
Classification of Computers:-
1. Desktop Computer
2. Server Computer
3. Embedded Computer
Measuring and summarizing performance
1. Performance (Speed with which a program can be executed)
2. Response Time/Execution Time (Time b/w the start & completion of an event)
3. Benchmark (Act of receiving a computer program, to get the cong. of any system)
4. Throughput (Total amount of work done in a given time)
Relation b/w Response time and throughput
Performance=1/Execution
What are the types of Benchmarks?
1. Kernel (Heart of a computer): They are small key pieces of real architecture containing key code. One can say that these correspond to all the program section of an operating system.
2. Component Benchmark: This is a program designed to measure the performance of computer’s basic components, automation of computer hardware, cache size and memory loading. It also has I/O benchmark followed by database benchmark.
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