适用于接口课程设计， 基于8255，8259，8253/8254 VC++开发底层，delphi7开发界面 附带课程设计报告。-courses applicable to the interface design, based on 8255,8259, Count VC bottom delphi7 fringe curriculum development interface design report.

8255芯片、8253芯片在微机接口实验箱上的初始化及应用的程序-8255 chip, the 8253 chip microcomputer interface experimental tank initialization and application procedures

通过8253、8255芯片、8259A芯片控制步进电机的实验-controlling Stepping motor through 8259A/8255/8253 chips, and display on 8279 chip when nessary

微机原理与接口技术，串口通信实验汇编代码，用到8251,8255,8253可编程芯片-Microcomputer Principle and Interface Technology, Serial communication test assembly code, programmable chips used in 8251,8255,8253