电子测量仪器仪表正向自动化、数字化、多功能、高精度和宽量程方向发展。在微处理机出现以前,一些自动测试和自动控制系统中,已经采用了小型计算机。但是小型计算机由于价格高、体积大,因而在电子测量仪器仪表中的应用受到了很大的限制。近几年来,由于微处理机的迅速发展及其本身所具有的一系列优点,使它能够迅速地应用于电子测量仪器仪表,为电子测量仪器仪表的发展开辟了崭新的局面,同时也预示着电子测量仪器仪表必将发生一场深刻的变革。一、微处理机电子测量仪器仪表的特征在电子测量仪器仪表中采用微处理机,基本上有两种做法: 其一是采用标准接口总线,将多种仪器仪表组合成一个多功能的测量系统。采用标准接口总线后,有可能使世界各国生产的仪器仪表组合在一起使用。接口总线中包括有双向数据线、数据-字节转换控制线、接口管理线。美国HP公司提出了这种接口总线的标准(IEEE标准),并已开始供应各种应用标准接口的 Electronic measuring instruments are positive automation, digital, multi-functional, high-precision and wide-range direction. Before the advent of microprocessors, small computers were used in some automatic test and automation systems. However, due to its high price and large size, the small computer has been greatly limited in the application of electronic measuring instruments and meters. In recent years, due to the rapid development of microprocessors and its own series of advantages, it can be quickly applied to electronic measuring instruments, instrumentation for the development of electronic measuring instruments opened up a new situation, but also indicates Electronic measuring instruments is bound to undergo a profound change. First, the characteristics of microprocessor electronic measuring instruments The use of electronic measuring instruments microprocessor, there are basically two ways: First, the use of a standard interface bus, a variety of instrumentation combined into a multi-purpose measurement system . The use of standard interface bus, it is possible to make the world’s instruments and meters used in combination. Interface bus includes bidirectional data lines, data - byte conversion control line, interface management line. The United States HP company proposed this interface bus standard (IEEE standard), and has begun to supply a variety of application standard interface