At last, the method to produce the workingsignal of CCD in detail with using VHDL is listed. Based on the method, it is used in laser device of optic triangle measuring.
最后列出采用VHDL制作CCD工作时序的方法，基于这种方法把它用于光学三角法的激光测微头。
2
To make this a pull system, it needs a mechanism allowing the downstream process to somehow signal the upstream process to start working.
而为了使其变成拉动式系统，还需要一种机制来使下游工序以某种信号通知上游工序开始工作。
3
As a pediatrician, I know fever is a signal that the immune system is working well.