比较好用的两种数码管键盘管理芯片，BC7281和BC7276，与单片机接口方便，编程简单。-Relatively easy to use two digital tube keyboard management chip, BC7281 and BC7276, and the microcontroller interface, simple programming.

vb编程键盘代码大全，可以方便查询键盘代码，进行编程-Vb programming code, keyboard can convenient query code and programming