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Introduction to Basic Processor Unit :-
1. At a highest level, a computer consists of CPU(central processing unit),memory and Input-output components with one or more module of each type.
2. These components are interconnected in some fashion to achieve the basic function of the computer, which is to execute programs.
3. Thus at a top level we can characterize a computer system by describing
a)The external behavior of each component, that is the data and control signals that it exchanges with other components and
b)The interconnection structure and the contrls required to manage the use of
the interconnection structure.
4. This top-level view of structure and function is important because of
its explanatory power in understanding the nature of a computer.
5. Equally important is its use to understand the increasingly complex
issues of performance evaluation.
6. A grasp of the top-level structure and function offers insight in to
system bottlenecks, alternate pathways, the magnitude of system
failures if a component fails and the ease of adding performance
enhancements.
7. In many cases, requirements for greater system power and fail safe
capabilities are being met by changing the design rather than merely
increasing the speed and reliability of individual components.
8. Thus, this unit focuses on major components of computer, instruction
fetch and RISC and CISC
Objectives of Basic Processor Unit :-
At the end, the learners will be able to
- Â Describe the various components of a processorÂ
- Illustrate the concept of Datapath.Â
- Compare and Constrast between various types of instructionÂ
- Differentiate between the RISC and CISC processor