STC89C51是高成本

完整的实现RS232与TCP/IP网络协议的转换-Realize the full RS232 and TCP/IP network protocol conversion

步进电机的详细应用，这个使用起来很方便，大家可以学学！-Stepper motor applications in detail, it is easy to use, we can learn!

SH7144芯片使用实例 请使用Hew4进行调试-SH7144 chip using examples use the debug Hew4

CH341评估板，演示USB转串口、转打印口、转并口及同步串口等-CH341 Evaluation and demonstration USB to serial, LPT switch, switch synchronous serial port and parallel port, etc.

x9313数控电位器的驱动函数，用于程控LCD对比度，-NC Potentiometers x9313 driver function for program-controlled LCD contrast,

单片机用T1中断在IO口P1.0输出乐曲(在P1.0口与VCC间接一喇叭即可听到) 1.由于输出的是方波，比较难听:-)你也可以将波形细分用DA输出正弦波 2.由于T1频繁中断，任何其他中断发生都会是乐曲打顿，只适合试验 3.优化音符编码：一个字节中包含节拍、音符、升降调，可区分数据和命令 -Single-chip microcomputer used in the IO port T1 interrupt output music P1.0 (P1.0 port with VCC in the indirect one can hear the speaker) 1. As the output is a square wave, more bluntly :-) You can also fine-waveform DA output sine wave with sub-2. Due to the frequent interruption of T1, any other interruption occurs Dayton will be playing music, is only suitable for test 3. optimized coding notes: A byte contains rhythms, notes, take-off and landing tune can distinguish between data and command

lcd19264 用C51控制12864显示汉字 -C51 control lcd19264 with 12864 display Chinese characters

Master and Slave Example Protocol Design for mcs-51 keil c51

用C51语言开发，相当有趣，附详细文档及硬件电路图-with C51 language development, very interesting, with detailed documentation and hardware circuit

ATMEL 89sxx 系列51单片机下载线原理图 这是ATMEL公司的官方板-ATMEL 89sxx Series 51 Single-chip line schematic download This is the official board ATMEL Corporation