winavr开发环境下的一段pwm测试程序，可精确控制led的亮度。

字母钟系统的实现代码，GPS卫星时钟对时的实现。汇编源吗-alphabetical system of code, the GPS satellite clocks on the achievement. Compilation source?

ht47r20遥控程序，红外线载波输出频率这系统时钟的12分频，当系统频率为480KHZ，载波频率为40KHZ-ht47r20 remote control procedures, infrared output carrier frequency system clock frequency of 12 minutes, when the system frequency for 480KHZ, carrier frequency 40KHZ

使用8051系列单片机控制PGA2310-use 8051 to control the PGA2310

c8051f单片机支持软件读写flash操作例程与相关资料，使得能过无需外接eeprom等存储器，就能保存非易失性数据（掉电不丢失的数据）。-c8051f MCU support software routines to read and write flash operation with relevant information, It would make no such external eeprom memory, we will be able to preserve nonvolatile data (power-fail without loss of data).

采用步进电机模拟洗衣机电机，实现上水、浸泡、洗涤、漂洗、甩干等过程。洗涤分弱洗、轻洗、强洗；可设定3级水位设定，每级水位均设定水位下限（值自定）；可选择漂洗次数（3~5次）。使用键盘进行流程及参数设定及自动存储流程，设定暂停键，可暂时停止洗衣机的工作，恢复后按原设定程序继续进行，同时设定停止键，可终止洗衣机的工作，并在LED或LCD上显示当前流程。-Simulation using stepper motors washing machine motor to achieve Sheung Shui, soaking, washing, rinsing, drying and other processes. Washing sub-weak wash, light wash, strong wash can be set to three water level settings, set the water level in each grade level were lower (the value of self-set) optional rinsing times (3 ~ 5 times). Using the keyboard processes and parameter settings and automatic memory processes, set pause button to temporarily suspend the work of washing machines and restore original settings after the process to continue at the same time set the stop button, may terminate the work of washing machines, and LED or the LCD displays the current process.

Atmel Uart C51程序（主方式）-Uart (the main mode)

Atmel Uart C51程序（timer2方式）-Uart (timer2 way)

单片机串行E2PROM驱动大全-serial E2PROM- Daquan

单片机与ALTEC温控仪的通讯，设置温度。-Single-chip temperature controller with ALTEC communication, set the temperature.

单片机的内部定时器应用-SCM internal timer Application