C language programming book. C51 MCU development tool

基于SHT71数字温湿度传感器的采集实现，89c51-SHT71 digital temperature and humidity sensors based on the collection of achieving, 89c51

银行校验码软件计算：CRC校验。 对于不明白CRC或银行业需求的人士提供资源-banks correcting code software calculation : CRC. For CRC or do not understand the needs of the banking sector to provide resources

单片机P1口与4个按键连接，用于信号幅度和频率调节操作键。单片机P0、P2.7、P3.6(-WR)与DA0832、2个741(运放)连接构成波形信号输出电路。 编程使波形信号输出电路输出正弦波信号，并且可通过操作键调节信号的幅度和频率。幅度和频率调节级别从0~10，共11个等级。 -Singlechip P1 I connect with the four buttons for the signal amplitude and frequency adjustment operation keys. Singlechip P0, P2.7, P3.6 (-WR) and DA0832, 2 months 741 (operational amplifier) to connect constitute waveform signal output circuit. Programming so that waveform signal output circuit output sine wave signal, and can be operated keys adjust the signal amplitude and frequency. Amplitude and frequency adjustment level from 0 ~ 10, a total of 11 grades.

PT2313程序音响控制电路1-PT2313 program audio control circuit 1

单片机系统中的汉字显示 　　 摘要： 需要显示的汉字较多时，单片机系统中的汉字编码非常繁琐。本文介绍一种直接利用PC机的汉字内码作为单片机系统的汉字编码，以简化系统的设计。-SCM system of Chinese character display Abstract : The need to show the Chinese characters more, the SCM system of Chinese character coding very cumbersome. This paper presents a direct use of the PC as the Chinese character coding SCM Chinese character coding system to simplify system design.

CC2430 DMA程序 CC2430 DMA程序 CC2430 DMA程序-CC2430 DMA process procedures CC2430 DMA procedures CC2430 DMA procedures CC2430 DMA

l298调 速 程 序 常规的接法是这样的，EnableA接PWM信号，Input1输入正反控制信号， Input2是Input1经过反相以后的信号。L298的电平是与TTL电路相兼容的，一般是超过2.5V就为高电平。假如Input1为高电平时电机正转，那么低电平时就是反转，PWM信号控制电机的转速。 _________________ -l298 procedures conventional speed connection that is the case, EnableA then PWM signal, Input1 input positive and negative control signals, Input2 is Input1 through after RP signal. L298 level is compatible with TTL circuits, and is generally more than 2.5V for the high. If Input1 is high when the motor is transferred, then that is when low-level inversion, PWM signal to control motor speed. _________________

这是无线传感器网络用的操作系统tinyos-1.1.0,未来的世界将是它呵-This is the wireless sensor networks using the operating system tinyos- 1.1.0, the future world will love it

ds1302制作的数码管电子闹钟 显示当前时间，可设定闹钟时间-ds1302 produced electronic digital alarm clock displays the current time control can be set the alarm time

标准IIC协议通信程序，能读写EEROM、实时时钟，使用方便，可靠！-Standard IIC protocol communication procedures, can read and write EEROM, real-time clock and easy to use, reliable!