基于单片机控制的键盘接口设计及其编程

Design of interface keyboard based on SCM and its programe

介绍了一种基于单片机AT89C51控制的键盘输入系统,应用中断扫描和编程扫描两种不同的键盘工作方式实现了多功能键和多数字键的输入。并给出了系统的硬件电路图和软件流程图。此系统已在光纤光棚传感解调系统中得到很好的应用,实验证明,该系统电路结构简单,抗干扰能力强,且稳定性好,具有很好的实用价值。

A system of keyboard input which is based on the single chip microprocessor（AT89C51） control is introduced. Using two different keyboard workings which are interrupt scan and programe scan, the input of many function keys and many number .keys is achieved. Meanwhile, The principle chart of its hardware circuit and the flow chart of its software are presented. This system has applied to the demodulation system of fiber Bragg grating sensors. The experiment results show that this system has the simple control circuit, good anti-jamming ability, good stability and high practical value.