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pca 用于定时器功能 pca可用于捕捉，定时，pwm输出等功能(pca pca can be used to capture, timing, pwm output for timer function)

说明：  2015年电赛频率计，精密度高，简单易实现，双通道实现捕获(2015 frequency race frequency meter, high precision, easy to implement, dual channel capture)

单片机键盘接口，可以用于单片机使用键盘,省去很多时间(PS/2 jian pan jie kou cheng xu )

七、 虚拟信号采集分析器 1）：利用信号发生器产生不同信号（信号的相关参数可调） 2）：在信号上叠加白噪声。 3）：对上述信号进行采样（采样频率可调） 4）：在采样的过程中利用均值滤波（每三个点取均值） 5）：显示采样后的波形，并对其进行频率分析。 6）：将采样后的波形与原波形做比较（在同一坐标系中显示） (Seven, the virtual signal acquisition Analyzer 1): different signals generated by the signal generator (signal correlation parameters adjustable) 2): white noise superimposed on the signal. 3): the said signal is sampled (sampling frequency adjustable) 4): In the process of sampling using the mean filter (averaging three points each) 5): Show the sampled waveform and its frequency analysis. 6): the sampled waveform is compared with the original waveform (shown in the same coordinate system))

单片机串行数据采集与传输模块设计.pdf(MCU Serial Data Acquisition and transmission module design. Pdf)

Assessment and performance analysis of routing protocols in ad hoc networks (Persian Article)

说明：  组态王工程密码清理，6.51工程密码清除，忘记工程密码处理。(xxxxxnnnnbbbbbbbbbbbb)

通过RS485端口不停地发送数据0xaa用示波器观察RS485端口A、B信号线上的波形或者用RS485接收器接收发送的字符。(Through the RS485 port to send data continuously 0xaa observed with an oscilloscope RS485 ports A, B signal waveforms or use the RS485 line receiver sends characters.)

利用带有蓝牙功能的安卓手机与HC-05蓝牙模块通信。用stm32f103c8t6单片机来控制开关量(Use your cell phone to communicate with bluetooth. Switch quantity is controlled by single chip microcomputer)

8通道12位AD采集芯片LTC2309的IIC应用(LTC2309: 8-channel, 12-Bit SAR ADC with I2C interface)