转速表：硬件简单，您可以用89c2051代替89c51，p1口做数据输出；p3口做位驱动，int0为转速信号输入...

单片机复位电路应用集锦，希望能给用到的朋友们帮助-Application of single-chip reset circuit allehanda, hope that they will be used to help my friends

Keil公司提供的C51例程(部分源码)，相当实用，适合初学者学习借鉴。-Keil" s C51 offers routines (some source code), very useful for beginners to learn from.

此程序为调试通过的程序，带有I2C总线功能的程序.-this procedure through the debugging process, with I2C bus function procedures.

蜂鸣器响 改变蜂鸣器的频率，通过改变延时时间 蜂鸣器的时间要是是靠延时来完成的-Buzzer buzzer ring to change the frequency by changing the delay time if the buzzer is the time to be completed by the time delay

绝对精美的万年历，12864+ds1302+ds18B20,支持公历，农历，温度等。功能非常全，非常精美。-Absolutely beautiful calendar, 12864+ Ds1302+ Ds18B20, in support of the Gregorian calendar, the Lunar and temperature. Very wide, very delicate.

数据块的首址在R0中，字节数在R7中。 单字节无符号数据块排序（减序） 影响资源：PSW、A、R1、R6-the first data block site of the R0, the total number of bytes in which R7. No symbol single-byte data blocks ranking (by order) affecting resources : PSW, A, R1, R6

反汇编 Ver1.2-anti-compilation Ver1.2

ATMEGA128的EEPROM驱动程序，对自己编写端口驱动的同志有很大的帮助！-ATMEGA128 the EEPROM driver, port driver of their comrades in the preparation of great help!

51单片机的 中文拼音输入法 C源程序-51 MCU Chinese Pinyin input method C source

基于MSP430F149单片机的PS/2键盘程序，可以读取普通PC键盘上的按键键值。希望读者已了解PS/2的引脚功能。-MSP430F149 MCU-based PS/2 keyboard procedures, which can be read by an ordinary PC keyboard keys on the keypad. I hope readers understand PS/2 pin functions.