program control switch

On the basis of above work, the paper designs the PLC program on switch-control and communication, the touch panel monitor software and the remote monitor software based on the two projects.

在监控方案制定以后，本文研制了可编程控制器的开关控制和通信程序，触摸屏监控画面，并对两种远程监控方案分别设计了监控软件。

Optimizing Control of Automatic Switch over Program for Molecular Sieve

分子筛自动切换程序的优化控制

And a Visual Basic parallel port control program was used to drive electromagnetical valves through an amplifying circuit. Thus, the switch of gas channels in pneumatic micropump can be controlled.

同时，采用VISUAL BASIC程序语言编制并行接口控制程序，经自行设计的放大电路作用后驱动两位三通电磁阀，实现对气动微泵各气路间的切换的控制。

The circuit is simulated with PSPICE program, and the results indicate that the designed circuit could generate kilo-voltage nanosecond pulse control signal that can match the applications requirement of electro-holographic optical switch well.

利用PSPICE软件对电路进行了仿真，结果显示，利用所设计的电路可产生千伏级的纳秒脉冲控制信号，能较好的满足电控全息光开关的控制需求。

Now a stored program control switch is simulated on a cheap micro-computer. All hardware movements of it are realized by software simulation, and calling processing can be carried out. It has various functions such as signal tone, ringing and talking etc.

在廉价的微机上实现程控数字交换机的模拟，该模拟交换机所有硬件动作均由软件模拟完成，它能进行呼叫处理，并有各种信号音、振铃和通话等各种功能。