ds18b20显示程序，用数码管显示，能测0到99度的温度

适用于dos环境的串口通信，很好的程序-dos environment applicable to the serial communication, good procedures!

122x32的图形显示器c51 驱动程序，兼容多种品牌使用量很大，有一定的参考价值-122x32 graphical display decoder drivers, compatible use of a variety of great brand, which is the reference value

该文件是直流电动机的开环、闭环应用的资料和程序。-DC motor open-loop, closed-loop application of the information and procedures.

单片机C语言轻松入门,为上海沪生电子产品使用说明书。-Singlechip C language easy entry for the Shanghai and Shanghai Health Electronic Product Manual.

Buses are a powerful and efficient modeling construct. Using them to produce optimal code is dependent on following a basic set of best practices. This document provides a set of patterns that can be followed the best results

学习使用，例子中IO口看实际情况改变！望对大家有帮助-learning, I IO example, depending on the actual change! We are looking for help

绍了一种工业设备中常见的键盘方案实键现思路给 出程一序框图和用语语 C51 言源现思键关序框 -Nesho industrial equipment of a common keyboard keys are thinking it is a sequence diagram-term language and the source of C51 statement is thinking key sequence frame clearance

900MHZ高频头的控制参考程序和参考线路图.-high-frequency 900 MHz band first reference to the control procedures and reference the road map.

单片机c语言源程序 初学者 很有用哦 -SCM c language source code is useful for beginners oh

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.