篮球记分器 课程设计 内涵protel原理图 pcb、源程序。c语言 ，很完善.-Basketball scoreboard curriculum design content protel schematic pcb, source. c language, it is perfect.

电子琴的原理图，即PCB图等，还附带了单片机C51的程序，能够较好的实现电子琴功能-Electronic organ schematic diagram, PCB figure, etc., also comes with a microcontroller C51 program, can better realize the electronic organ function