Abstract
The technology and applications of microprocessors have grown rapidly over the past two or three years. Many products have been launched recently incorporating microprocessors, and manufacturers make various claims of how wonderful these devices are. There has always been a certain mystique concerning the computer industry and the introduction of microprocessors has left some end users even more confused about the range of equipment suitable for process control and automation systems. This paper gives an introduction to the basic elements of a microprocessor application and why so many people are now using them. It is written from the point of view of a company producing its first microprocessor based product. It covers some of the problems which would arise in the conception, design and building of such products and highlights some of the options available, decisions on which could affect the whole future of a particular product.
It is not sufficient to design the hardware of a microprocessor system; computer programs (software) are required to control the desired functions. There are many options available for the production of software. These are outlined and the major issues discussed. Even more important though, is the need to design hardware and software together as a total system.
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