基于isd2560和51单片机的语音程序，包括原理图和完整程序，直接调用即可，c语言。-Microcontroller based voice isd2560 and 51 procedures, including schematic and complete procedures, direct calls can be, c language.

单片机控制步进电机正反转。Proteus仿真。C语言编写。-51 MCU with stepper motor control in C language.Proteus simulation .

基于51单片机的十字路口交通灯设计，有keil工程文件，proteus仿真，c语言程序，原理图及pcb图纸。-Based on 51 single-chip crossroads traffic lights design, keil project files, proteus simulation, c language program, schematics and pcb drawings.