这是一个基于P89c51单片机的声音与显示C51程序

通信工程系专业综合设计C51单片机的键盘去抖程序,-communications professional engineering design C51 microcontroller integrated keyboard Tremble procedures,

通过COM1与单片机通讯的界面程序，包含3个线程-Communications through COM1 and MCU interface process contains three threads

是protel的讲义，应该有利于大家的学习-Yes protel lectures, should be conducive to our learning

时钟ic DS1302的驱动程序。开发环境是在c51下。希望给大家做个参考。-clock ic DS1302 the driver. The development environment is under decoder. We hope to be a reference. Thank you! !

S3C2442的起动代码程序等。有较大的实用价值-S3C2442 starting code procedures. Have a greater practical value

Atmelarm 有关ADC例子,是IAR4.3环境的-Atmelarm on the ADC example is the environment IAR4.3

SPI是一个环形总线结构，由ss（cs）、sck、sdi、sdo构成，其时序其实很简单，主要是在sck的控制下，两个双向移位寄存器进行数据交换。 假设下面的8位寄存器装的是待发送的数据10101010，上升沿发送、下降沿接收、高位先发送。 那么第一个上升沿来的时候 数据将会是sdo=1；寄存器=0101010x。下降沿到来的时候，sdi上的电平将所存到寄存器中去，那么这时寄存器=0101010sdi，这样在8个时钟脉冲以后，两个寄存器的内容互相交换一次。这样就完成里一个spi时序。 -SPI bus is a ring structure, by ss (cs), sck, sdi, sdo composition, its timing is actually very simple, mainly under the control of the sck and two bi-directional shift register for data exchange. Assuming the following 8-bit register is loaded to send the data to be 10,101,010, rising to send, receive falling edge, high first sent. Well, the first rising edge to the time data will be sdo = 1 register = 0101010x. Falling edge comes, sdi on the level will be stored to the register, then register at this time = 0101010sdi, so 8 clock pulse later, the contents of two registers to exchange time. This will be completed in a spi timing.

好东西，大家快来下，值得一看的东西，受益匪浅

该源代码运行于89c51系列单片机上,可从输入FLEX二进制码流中解交织,处理CRC纠错,并最终解码出有效ASCII码数据.-the source code running on 89c51 MCU, FLEX can be imported from binary code stream deinterleave handling of CRC error correction. and finally decoding of effective ASCII data.

红外接收C库文件, 晶振:11.0592,中断方式-Infrared receiver C library file, crystal: 11.0592, interruption mode