时间、字符发生器

Timer & Character Generator

阐述了时间、字符发生器的一般工作原理 ,屏幕显示字符集成电路 μPD6450的技术性能、引脚信号和命令格式 ,以及利用 μPD6450构成的时间、字符信号发生器的系统和系统原理图及如何实现对 μPD6450的控制 ,给出了控制过程流程图和程序清单 ,并阐述了时间码的一般控制要求和改进设想 .

This article introduces the general principle of timer & character generator,the technical capability,the signal of connection,the format of command for on-screen character display IC-μPD6450,the timer & character generator' system consisting of the μPD6450 chip,and the system's priniple diagram as well as the method to control μPD6450,the serial diagram of the control procedure and the program.The article also introduces the general demand for control timer & character generator' system and provides suggestion about how to improve this system.