MSP 430 computer communication between the USB interface code

该程序用于控制电机的速度,通过占空比PWM来实现该功能.-The program used to control motor speed and PWM duty cycle to achieve through this feature.

采用12位MAX 197对外部信号采样。采用全周波傅立叶积分算法，对采样信号进行处理，对电力系统的电压有效值、功率等特征量进行实时在线监测；采用全数字测量法测量相位差；并采用自适应技术调整采样间隔，消除非同步采样对计算造成的误差，利用PIC18F458捕获功能实时监测电力系统频率波动，修订采样间隔。分析了各量的测量误差，均达到标准。并提供友好的人机交互界面。-used 12 MAX 197 pairs external signal sampling. Using Fourier-Cycle Integration Algorithm for the sampling signal processing, power systems to the RMS voltage, power characteristics of the volume in real-time on-line monitoring; All digital measuring method phase difference; Adaptive technology and the sampling interval, the elimination of non-synchronous sampling of the calculation error using PIC18F458 capture real-time monitoring of power system frequency fluctuations amended sampling interval. The analysis of the measurement error are up to standard. And to provide a friendly man-machine interface.

蜂鸣器响 改变蜂鸣器的频率，通过改变延时时间 蜂鸣器的时间要是是靠延时来完成的-Buzzer buzzer ring to change the frequency by changing the delay time if the buzzer is the time to be completed by the time delay

SHT71数字温湿度传感器的AVR单片机驱动程序-SHT71 digital temperature and humidity sensor AVR Single Chip Driver

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 -Reading table shows sine wave, the attached map. But only the output frequency, changes need to go through in order to output adjustable

飞思卡尔MC9S08AC60数椐手册.此单片机是飞思卡尔新推出的一款,确实不错.推荐给大家看一下.-Freescale MC9S08AC60 show manual number. This is a single-chip Freescale introduced a new, really good. Recommend to everyone to look at.

AD转换芯片max197驱动程序（KeilC51）-AD converter chip max197 Driver (KeilC51)

蓝牙耳机的参考电路图，便于开发蓝牙耳机人供参考-Bluetooth headset reference circuit to facilitate the development of Bluetooth headset, for information,

用51单片机控制温湿传感器dht11的程序 c语言编写-With 51 single-chip microcomputer to control temperature and humidity sensors dht11 procedures c language

简易开关电源的设计，详细WORD文档，从电子设计论坛下载的 www.64134703.com-Simple Switching Power Supply Design