use 51 parallel port to driver LCD display in scale 128*64 testing code

这个程序是用TI的单片机MSP430实现的PWM波形的输出。-This procedure is the realization of TI s MSP430 microcontroller PWM output waveform.

8051系列的AD 和DA转换源代码，包含DAC0832,adc 0809,TCL548,TCL2543,ADC2051等等，有C和ASM的源代码。-8051 series AD and DA conversion source code, including the DAC0832, adc 0809, TCL548, TCL2543, ADC2051, etc., there are C and ASM source code.

这是一个步进电机调速的程序，可以完成100级的调速。-This is a stepper motor speed control procedures, to be completed 100 of the governor.

富士通90F927单片机英文资料 据说这是专为仪表设计的芯片-Fujitsu 90F927 microcontroller information in English is said to be designed specifically for the instrument chip

CH341USB转串口PCB原理图。 CH341USB转串口PCB原理图。-CH341USB schematic PCB serial transfer. CH341USB schematic PCB serial transfer.

单片机C51串口接收（中断）和发送例程，可以用来测试51单片机的中断接收 -80C51 Serial reception (suspended) and send routines can be used to test 51 SCM interrupt reception

MODBUS通信协议MODBUS源代码最初是MODICON为自己生产的PLC（可编程逻辑控制器）协议而开发的，后来广泛应用于工业部门，这是一对多的通信方式，他的方式是免费开放的，任何人都可以开发，这么多的PLC，人机界面和控制软件有支持方案。

《单片机C语言编程与实例》的代码,使用keil编程环境,供大家参考- Microcontroller C programming language and examples of code, using keil programming environment, for your reference

80X87 CPU汇编大全！内容丰富，汇编工程师不可多得的资料！-80X87 CPU compilation Series! Rich in content and engineers a rare compilation of information!

ATT7022B与C8051F的通讯licheng-C8051F communication with ATT7022B Licheng