C51串口扩展5个源代码，可以弥补51单片机串口不足的缺点，

步进电机加减速运行程序 步进电机启动时，转速由慢到快逐步加速 步进电机匀速运行 步进电机由快到慢逐步减速到停止-Stepper motor stepper motor deceleration run the program starts, the speed gradually from slow to fast speed stepper motor stepper motor run by a uniform approaching slowly and gradually slow down to stop

keil C51 Safter－Switch事例-keil C51 Safter-Switch case

该设备可以循环检测24节2V6V12V蓄电池组，测量精度达0.05 ，测量结果通过RS485方式上传至主监控。采用MODBUS通讯协议。-The device can loop detection 24 2V 6V 12V battery, measurement accuracy of 0.05 , the measurement results through the RS485 upload to the main control means. Using MODBUS communication protocol.

MICROCHIP KEELOQ CODE HOPPING SIMPLE DECODER

多种实时时钟芯片的读写应用程序，所用控制器为MCS-51系列的单片机-multiple real-time clock chip to read and write applications, using controller for the MCS-51 microcontroller series

profibus从站开发

单片机开发板的电路图 包含 PCB。。。。U1=89C51 U2=555 U3=MAX232 U4=24C01 U6＝X25045看门狗 X1=共阳数码管 -Single-chip development board contains the circuit PCB. . . . U1 = 89C51U2 = 555U3 = MAX232U4 = 24C01U6 = X25045 watchdog X1 = total yang digital tube

一个可作为mp3播放器固件的代码集,包括解码,播放,控制,任务管理等.-as an MP3 player firmware code sets, including decoding, audio, control, task manageme#$#!116333#!#$XTerran_NoMgr.rar!#$#cluster management, which will mainly address the Terminal Services session assignments, as a machine routing machines, and the remaining machines sharing Terminal Services sessions.

C51源程序，实现IAP功能，可实现嵌入式系统的自主学习功能

rtx51操作系统说明-rtx51 OS