【摘要】 针对一项320路开关量控制的应用需要,设计以普通PC机并口为接口,提出系统的硬件和软件设计方案,编制软件主界面,结合数据库制作硬件电路,根据控制要求控制继电器动作,以实现计算机对320路继电器的控制。更多还原

【Abstract】 With the applied requirement of the control of 320 switches, this paper gives a hardware and software design resolution which is interfaced by personal computer parallel port. It also includes designs for the main frame of the software, connection to database and hardware circuit. So that the system can control the actions of relays and realize the control of 320 switches circuit by PC.更多还原