51系列单片机开发：实验课程 显示程序（液晶显示）

用at89s52访问MAX7219(LED数码显示）-AT89S52 visit with MAX7219 (LED digital display)

msp430f449的文件， 很有用的-MSP430F449 document very useful

pic16f877实现spi功能和isd1790语音芯片的通信-pic16f877realise spi function和isd1790sound chip comunitions

一个75HZ铃流实时检测程序，灵敏度很高，可以用于电话来电铃流检测。-a 75HZ bell flow real-time detection procedures, high sensitivity, can be used for phone calls Chu flow detection.

本帮助文档是基于nRF24LE1的官方开发平台的SDK。里面有关于nRF24LE1详细的具体的子程序，可以直接应用。本人已经测试通过大部分。-This help document is based on nRF24LE1 the official development platform SDK. Inside details on nRF24LE1 specific subroutines that can be applied directly. I have been tested by the majority.

这是基于ATMEL89S51上的一个电子时钟源代码程序,有相当完美的注释解说,希望对大家有所帮助.-This is based on the ATMEL89S51 on an electronic clock source code for the procedure, quite a perfect footnote to explain, and they hope to be helpful to everyone.

AVR系列单片机AD转换程序，适用于atmega8,atmega16,atmega128.-AVR microcontroller series AD converter applies to atmega8, atmega16. atmega128.

单片机系统上电后，P0 口和 P1 口都被清 0。然后，你规定一个由 6 个数字构成的序列（每个数字从 0～F 中选取），比如 E、8、9、0、7、F。然后每次当单片机检测到外部中断 0发起中断时间时，读取 P0 口和 P1 口上的状态值，当连续 6 次外部中断事件的对应的数字序列构成你所设定的序列后（举例来说，如果 P0.0 是 1，P0 和 P1 的其他管脚是 0，那么我们称为检测到一次数字 0），从串口打印输出一幅类似下图的 16×16 的ASCII码的圣诞树图片。-Single-chip microcomputer system after power, P0 and P1 mouth I have been ching 0. Then you set a six figure constituted by the sequence (each number from 0 ~ F in selected), for example, E, 8,9,0,7, F. And then each time a single-chip detects external interrupt 0 initiated interruption time, I read the P0 and P1 mouth on the state value, when a row 6 times the corresponding external interrupt events constitute digital sequence set your sequence (for example example, if P0.0 is 1, P0 and P1 of the other pin is 0, then we called a number of detected 0), a printout from the serial port under similar 16 × 16 map of the ASCII code of the Christmas tree图片.

80c51f020，i2c管理时钟芯片PCF8583,-80c51f020, i2c management clock chip PCF8583,

有关液晶点阵的单片机程序，希望对初学者有一定的用处，大家看了就知道了。-the SCM process, and I hope to have some beginners use, we read will know.