这个版本的代码仅仅是由于AT89C2051兼容

NOKIA 5110LCD的驱动程序（带照片）MSP430的高级开发板的测试程序，主要有RS485通信，以太网通信，SD卡存储-NOKIA 5110LCD driver (with photos) MSP430 development board, senior test procedures, there are RS485 communication, Ethernet, SD card storage

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.

本例中含有电路图及程序，单片机的仿真也含其中，很有用哦-In this case contains circuitry and procedures, including single-chip microcomputer in which the simulation is also useful Oh! !

MSP430系列单片机实用C语言程序设计-MSP430 MCU Practical C Programming Language

这个程序利用89S51演奏生日快乐的歌曲 */-This procedure performed using 89S51 Happy Birthday song* /

虚拟声卡的详细说明！有一个虚拟声卡示波器，现在大量使用，并链接到地图与您分享！

DS1302时钟:综合应用定时器中断溢出,串口通信 实验现象: 每隔4SPC机得一时间,十六进制格式-DS1302 Clock: integrated application timer overflow interrupts, serial communication experimental phenomenon: every 4SPC machine was a time, in hexadecimal format

液晶1602的硬件设计通过单片机pic16f877和液晶相连.实现每按一次按键.加一的功能.带电路图-The hardware design of LCD 1602 and LCD connected through the microcontroller pic16f877 to achieve every time I press the button. Plus-one function. With a circuit

低电压检测. A口低8位接键盘列线，键盘行线接VDDIO；B口高8位接LED // 按K1键 低电压为2.4v // 按K2键 低电压2.8v // 按K3键 低电压3.2v // 按K4键 低电压为3.6v

平台化的单片机设计系统,内舍多种芯片驱动程序-Design of single-chip platform systems, with multiple homes chip driver