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微机应用系统开发完成后,在现场使用常常不能稳定可靠地运行,这是因为系统在设计、制造及运行环境中存在许多想象不到的不可靠因素。如系统设计不合理、元件质量差、电路不可靠等等。但最常见的是由于使用环境条件较恶劣,干扰太大,造成微机控制程序不能正常运行而使系统失去控制,即所谓“死机”和“失灵”。为了抑制干扰,必须对主机施行稳压、隔离、屏蔽、
After the development of microcomputer application system is finished, it often can not run stably and reliably in the field because there are many unexpected unreliable factors in the design, manufacture and operation environment of the system. Such as system design is not reasonable, poor quality components, the circuit is not reliable and so on. But the most common is due to the use of harsh environmental conditions, interference is too large, resulting in computer control program does not work properly and the system out of control, the so-called “crash” and “failure.” In order to suppress interference, the host must be regulated, isolated, shielded,