Micropeocessor

Microprocessor Fundamentals Course The International Congress for global recognition and technology www.icgst.com Instructor: Ashraf Aboshosha, Dr. rer. nat. Engineering Dept., Atomic Energy Authority, eighth Section, Nasr City, Cairo, P. O. Box. 29 E-mail: aboshosha@icgst.com, Tel.: 012-1804952 Lecture Notes Lecture (4) Microprocessor Architecture and carrying into action Course course of study: Computer Architecture Microprocessor bodily structure and Design Microprocessor programming and deed Microprocessor based Interfacing This is free educational material. Microprocessors have two major(ip) components The carrying out unit (EU) The Bus port wine unit (BIU) The Execution unit (EU) is employ mainly to discharge readings. It contains a roundabout called the arithmetical and logic unit (ALU). The ALU performs arithmetic ( + , - , * , / ) and logic (AND, OR, NOT) feats. The information for operations be stored in roundabout called Registers. A memorial is like a memory muddle except that we normally refer to it by a hear rather than spoken language. The EU has eight registers for storing data; their name calling be AX, BX, CX, DX, SI, DI, BP, SP and FLAGS register. Bus interface unit (BIU) facilities communication in the midst of the EU and memory or I/O circuits.

It is amenable for transmitting address, data, and control signals on the buses. Its registers are named CS, DS, ES, SS, IP; they film addresses of memory locations. The IP contains the address of next instruction to be executed by the EU. The EU and the BIU are connected via an national bus an d they work to depressher. firearm the EU i! s executing an instruction, the BIU fetches up to six bytes of the next instruction and places them in the instruction queue. This operation is called Instruction prefetch. The purpose is to quicken up the processor. 1 I/O Ports : I/O devices are connected to the calculator through I/O circuits. for each one of these circuits contains some(prenominal) register called I/O Ports. Some are used for data while others are used...If you want to get a full essay, order it on our website: OrderCustomPaper.com

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