该程序为51单片机做的频率计,可计频率可达999 HZ.

pic单片机串口通信调试程序，单片机收到上位机命令后发送数据-Single-chip serial communication pic debugger, single-chip PC orders received after sending data

Pic18F458的Can通信模块代码 -Can communication module of PIC18F458 code

F340 的编程例子 与c8051f340 系列的 常常用到编程例子 希望有帮助-F340_example

51单片机控制TC35I无线通信模块的完整Keil C程序，还包含GB2312与Unicode转换，国标汉字、ASC字符显示，串口通信，液晶模块控制等程序。-51 single-chip wireless communication module TC35i control the integrity of Keil C procedures, also includes GB2312 and Unicode conversion, GB characters, ASC characters display, serial communications, LCD module control procedures.

用AT89S51单片机实现LCD1602显示数字时钟功能，通过按键能调节时分秒、年月日星期。Keil C51开发环境-AT89S51 MCU LCD1602 display with digital clock function, through the buttons can be conditioned every minute, day of week. Keil C51 Development Environment

嵌入式FAT文件系统，不错。fat32lfn1.rar-Embedded FAT file system, yes. fat32lfn1.rar

基于HS108设计的红外水位检测仪，内含C源代码，原理图及PCB，稍作改动可以用于很多位置检测场合如油泵位置检测等。-HS108-based design of infrared detector water containing C source code, schematics and the PCB, to make a minor amendment can be used for position detection in many occasions, for example, pumps and other position detection.

智能门禁系统采用凌阳十六位单片机作为系统控制核心，利用其强大的语音识别功能，不仅实现了语音播放功能，完成了语音提示的要求，而且实现了语音控制门禁系统；利用其内置的Flash闪存，实现了密码的断电保护。除此而外，在键盘输入方面，强大的功能选择键满足了系统的要求；16*2液晶显示器的选择使操作要求清晰明了。此套智能门禁系统强烈体现了其人性化的一面-Intelligent access control system uses the Sunplus 16 single-chip system control as the core, to use its powerful voice recognition features, not only realize the voice playback, the voice prompts to complete the requirements, but also realize the voice control of access control systems the use of its Purchase of Flash memory, realize the power to protect your password. Furthermore, in keyboard input, the choice of powerful features to meet key requirements of the system 16* 2 LCD display options so that operating requirements clear. This set of intelligent access control system strongly reflects its human side

存储器 24c04 eeprom 51系列 汇编的源代码-Memory 24c04 eeprom 51 Series compilation of source code

st7538使用说明,芯片说明书 -Use ST7538, chip specification