单片机矩阵式键盘的设计

Design of Matrix Keyboard in Single Chip Computer

由于不同的单片机提供的片内外资源不同,所以在进行键盘扩展时其硬件电路也有所不同。以C8051F020单片机为例,介绍键盘采用中断扫描的工作方式实现数字键和功能键的输入。

As different single chip computer provides different source,therefore when the keyboard expands its hardware,the electric circuit has different.Taking micro-controller C8051F020 as an example,this paper introduces the input equipment of keyboard,the design uses the interrupt working way realizing the input of numeric keys and functional keys.