摘要
论述了一种占用微处理机端口较少 ,节省机时的键盘输入和显示方法。在 P1口部分口线上扩展 16键中断方式键盘输入和动态的 L ED显示器。给出了硬件原理图和主程序。
A keyboard input and displaying method are described, which occupies few COMS of microprocessor and spares little time of microprocessor working.On the P1 COM,keyboard input of sixteen keys interrupting way and unstill LED displaying screen are spread.Hardware principle chart,majar programe,offset programe and programe working chart of keyboard interrupting input are given.
出处
《现代电子技术》
2003年第19期90-92,共3页
Modern Electronics Technique
关键词
中断输入
动态显示
全零状态
搜索状态
interrupting input
unstill displaying
whole zero state
searching state
