Titlebook: Microprocessor and Microprocessor Technology; Noel M. Morris Textbook 1981Latest edition Macmillan Publishers Limited 1981 microprocessor.

GROSS

Input/Output, the user can input data to the CPU, but also the means by which the CPU outputs information to peripheral devices. Simplified I/O ports were introduced earlier in the book (see sections 1.5, 3.17 and 4.3); in this chapter we take a more detailed look at their operation together with methods of chip selection.

BUST

An Introduction to Microprocessors,This chapter ranges over some of the topics which are dealt with in detail later in the book. It is hoped that this introductory chapter will remove much of the ‘mystery’ of microprocessors, which can act as a block to their full understanding.

AMOR

考博

Memory Organisation,Read-only memories and random-access memories were briefly introduced to the reader in chapter 1. At this point we discuss the relevance of the two types of memory.

系列

A Typical Instruction Set,The instruction set of a microprocessor is the repertoire of commands or instructions which the programmer uses to cause the CPU to produce known responses.

歌曲

Programming and Applications,A . is a sequence of instructions which results in the CPU performing a required task. The sample programs included in this chapter include many instructions and techniques which are frequently used by programmers. In some cases it it possible to shorten the sample programs by using sophisticated techniques.

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Macmillan Publishers Limited 1981

赞美者

Binary Numbers and Arithmetic, of the system; the radix of the decimal system is ten. A numbering system widely used in association with computers is the . which has a radix of eight and uses the eight characters 0, 1, 2, 3, 4, 5, 6, 7. Yet another system which is widely used in association with microprocessors is the . (abbreviated to .) having a radix of sixteen.

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Logic Devices,’ condition as logic ‘0’. The operation of any logic circuit can therefore be described by means of a table containing 1’s and 0’s which define the state of the input signals and output signals. Such a table is known as a ..

雀斑

Subroutines and Stacks,ake up quite a large amount of the available memory space. Clearly, if the time delay program can be written once only, and ‘called for’ by the main program at appropriate intervals, then not only is the programming effort reduced but also the overall amount of memory space needed for the program is reduced.