51单片机产生锯齿波的程序

单片机系统中的汉字显示-SCM system of Chinese character display

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.

ASC 信号机控制程序,国内最先进的信号机控制程序-ASC signal control procedures, the most advanced signal control procedures

Proteus环境下DAC0832数模转换程序与电路.-Proteus environment DAC0832 digital-to-analog conversion process and the circuit.

这是微软的一个USB同步传输例程，虽然它是基于Intel USB开发板的，但是也很值得我们好好的研究。-This is a USB synchronization routines, although it is based on the Intel USB development board, but also worthy of our good look.

这是一个很好的键扫描电路和显示控制程序

时钟芯片ds12c887线片驱动程序，可直接应用-Clock Chip ds12c887-ray driver, can be directly applied

本代码实现了卡式电话的功能,包括长话市话特话,警告,扣费等一系列功能-This code implements the cassette phone features, including special long-distance local call, then, warnings, chargeback and a series of functions

状态1：PC机键盘发送0-9任一个数字，单片机接收发送的数字，并在数码管上显示。 状态2：单片机将接收到的数字回送到PC机，并在屏幕上显示。 -Status 1: PC Keyboard to send any number of 0-9, sending the number of single-chip receivers, and digital tube display. Status 2: Single-chip will receive the figures back to the PC, and displayed on the screen.

AD7705程序，基于AT89C52单片机-the program for ad7705，based on the AT89C52 mcu