进行单片机开发的朋友，对8259不会陌生吧，本文详细介绍了进行键盘显示外设开发时如何应用8259进行设计，内容详细，具有参考价值-Microcontroller development of the friends, the 8259 will not be unfamiliar to you, the paper describes the keyboard and display peripheral development application 8259 to design, detai