摘要
设计了一张PC机主机与8255A芯片、8253芯片、38译码器74LS138芯片、与非门7408、驱动器75477和扬声器的连接图,结构简单,意义明确。这个连接图可以使微机控制技术初学者迅速掌握PC机控制外设的入门技术和关键技术,这个连接图也是大学微机原理课上机实验的重要参考资料,是提高大学微机原理课教学质量的突破口。
A cording diagram with simple structure and clear meaning about the main engine of PC with 8255A chip, 8253 chip, 38 encoder 74LS138 chip, negation gate 7408, drive 75477 and speaker is designed. The cording diagram allows beginners for computer control technology to quickly master the introduction technologies and key technologies of PC control peripherals, and it is the key reference for the computing lab of computer . principle courses in university and is the breakthrough to improve the teaching quality o principles of computer in universiW.
出处
《价值工程》
2011年第25期133-133,共1页
Value Engineering
