AT89C51SND1C a hard disk

PC与89C51单片机串口通信的一个小例子-PC with the 89C51 single-chip serial communication of a small example

LT_1B msp430开发板例子程序－TB7

单片机与pc机通讯例程的mcu部分，package发送模式，具有数据验证功能,keil c编译-SCM and pc machines mcu part of routine communications, package delivery mode, with data validation features, keil c compiler

附件中是在keil for arm下编译的ARM程序――LCD万年历-In the annex is the keil for arm under the ARM compiled programs- LCD calendar

飞利浦D12的AT89C52固件-Philips D12 firmware of the AT89C52

基于PIC16F877A的DS18B20一线总线多路测温系统（采用Proteus模拟）。 Proteus模拟电路图＋PIC C语言源程序（MPLAB V8.00） 这可不是用多I/O模拟的多路测温哦！看系统功能： 1）、由一线数据线寄生供电，采用MOSFET强上拉给DQ供电； 2）、上电自动搜索可用的传感器并做CRC校验（实现了Search ROM命令）； 3）、 报警下限可选择； 4）、轮询显示温度，通过LCD1602输出； 5）、 传感器中途拔出或温度越界均报警； 6）、 采用声光报警方式，可做为温度控制信号标志。 -PIC16F877A-based multi-channel bus of DS18B20 line temperature measurement system (using the Proteus simulation). Proteus analog circuit+ PIC C language source code (MPLAB V8.00) This is not using multiple I/O simulation of multi-channel temperature measurement Oh! See system functions: 1) by the parasitic power line data line, using MOSFET strong pull-up power supply to the DQ 2), power-on automatically search for available sensors and do CRC check (to achieve a Search ROM command) 3) alarm limit choice 4), polling shows the temperature, through the LCD1602 output 5), half-way pulled out or the temperature sensors are all cross-border police 6), using sound and light alarm mode can be used as the

IO 口模拟232通讯程序 使用两种方式的C程序 占用定时器0 -IO simulated 232 communications programs use two forms of occupation C program timer 0

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.

各位朋友，本人买的12864液晶屏已经调试通过，下面是源程序，无偿奉献，有需要的赶快下啊，这可花了我一个星期啊(jjcool)-friends, I bought the 12864 debug screen has passed, Below are the source, with the dedication that are needed quickly under ah, it could take me a week ah (jjcool)

本程序基于8051F020，目的是深入的了解SPI与SBUS技术，设计用户自己的应用系统-This procedure based on 8051F020, the aim of deeper understanding of SPI with SBUS technology, design the user