超大规模集成电路制造技术日益完善,使16位微型计算机得到广泛普及和应用。8位微处理器除了做I/O控制器外,几乎没有厂家再用它设计微型计算机了。遗憾的是,微处理器有一个致命的弱点,那就是没有浮点运算能力。现有的通用微处理器都不能做浮点运算。因此,一些半导体厂家推出了与原微处理器配合使用的所谓浮点运算协处理器。例如,Intel公司的与8086/8088配合使 Increasingly large-scale integrated circuit manufacturing technology, 16-bit microcomputer has been widely popularized and applied. In addition to 8-bit microprocessor I / O controller, almost no manufacturers use it to design a microcomputer. Unfortunately, the microprocessor has a fatal weakness, that is, there is no floating-point computing power. Existing general purpose microprocessors can not do floating point arithmetic. As a result, some semiconductor manufacturers have introduced so-called floating-point coprocessors that work with the original microprocessors. For example, Intel’s 8086/8088 makes it