读表法显示正弦波，附图。但只能输出定频，需要经过改动才能输出可调的...

介绍了公交车IC卡电路图，汇编原程序-introduced the bus IC card circuit, the compilation of the original procedure

EEPROM 24c04其根本是，先往24C02中写数据，然后，读出数据，在数码管中显示，这样直观明了，详细说明，请看程序中注解-EEPROM 24c04 其根本是，先往24C02中写数据，然后，读出数据，在数码管中显示，这样直观明了，详细说明，请看程序中注解

基于51单片机实现UART通信 SPI通信 和IIC通信 -Based on 51 single-chip UART communication realize SPI and IIC communications communications

实现测试一台计算机的IP地址，是一个很好的测试IP地址的程序啊-Achieve the test of a computer IP address is a good test IP address of the program ah

16*64位点阵点 阵显示汉字程串口输出字符数据，P2口输出行扫描信号,P0_0输出595锁存信号-16* 64 dot matrix display Chinese characters lattice-serial output character data, P2 mouth output signal scanning, P0_0 595 latches the output signal

51单片机上的LCD12864驱动，相关的LCD驱动可以在我发布的其它驱动中找到。-51 MCU on the LCD12864 driver, LCD driver can be related to the other drivers I have found.

usb slaver for ide acce

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.

C51下个原代码,包括两个部分HT9200、HT9170 调用程序（C51）.c和HT9200、HT9170 调用程序注解-C51 under the former code, including two of HT9200, HT9170 called procedures (C51). c and HT9200 and HT9170 call procedures Notes

实现温度的采集与显示功能，内部温度传感器定时采样，并将采集到的温度信息广播发送出去，另外的节点接收到温度信息后通过串口向计算机上报，串口通信波特率为576-Acquisition and implementation of the temperature display function, the internal temperature sensor sampling timing and the temperature of collected radio to send information out to the other node to receive temperature information reported through the serial port to the computer, the serial communication baud rate to 57600