Using the PC architecture in embedded applications

Originally intended for office desktops, the IBM PC (and PC/AT) architecture has become an extremely popular platform for a myriad of applications never dreamed of by its originators. These include communications devices, vending machines, test equipment, data acquisition and control products, and medical instruments. There are many reasons why embedded system designers would like to use the PC architecture embedded within their systems, including widespread availability of PC-compatible hardware, software, peripheral devices and development tools. Despite these advantages, however, normal desktop PC designs are not reliable enough for many kinds of embedded applications. Fortunately, a number of PC enhancements and extensions have been developed which solve these problems. This makes the PC architecture an important option for use in embedded system applications.