SPI

基于51单片机的AD7705的调试程序 经验证很好用 和大家一起分享(51 Microcontroller based debugger AD7705 with proven good to share with everyone)

实用CAN与上位机通讯例程，适用于基于CAN总线的自动系统参考。(Practical CAN and PC communication routines for automated reference system based on CAN bus.)

说明：  利用TI公司生产的ARM款单片机MSP432实现硬件I2C，具有更加强大的性能(ARM chip microcomputer MSP432 produced by TI company is used to realize hardware I2C, which has more powerful performance)

ST的异步串口芯片4通道芯片资料,扩展RS232、RS422、485的好方法(ST16C554 chip uart)

Cisco advanced routeing ebootk, this is pdf file and you had to use the Adobe 8 to see it. the part1

电子设计工程师手册第五版，模拟部分，详细介绍模拟电路基础(Electronics Design Engineer Manual, Fifth Edition, analog section, details of the basis of analog circuits)

说明：  由于超声波指向性强，能量消耗缓慢，在介质中传播的距离较远，因而超声波经常用于距离的测量，如测距仪和物位测量仪等都可以通过超声波来实现。利用超声波检测往往比较迅速、方便、计算简单、易于做到实时控制，并且在测量精度方面能达到工业实用的要求，因此在移动机器人研制上也得到了广泛的应用。(Because of its strong directivity, slow energy consumption and long propagation distance in the medium, ultrasound is often used for distance measurement, such as range finder and level gauge, which can be achieved by ultrasound. Ultrasound detection is often fast, convenient, simple in calculation, easy to achieve real-time control, and can meet the requirements of industrial application in measurement accuracy, so it has been widely used in the development of mobile robots.)

诺基亚5110LCD&PCD8544IC编程，包括Datasheet、驱动程序例子和应用等等。(Nokia 5110 LCD & PCD8544IC programming, including Datasheet, driver examples and application and so on.)

说明：  使用STM32+SIM800C，拨打电话、发送短信、透传和手机蓝牙控制等(Using STM32 + SIM800C, dialing, sending short messages, transmission and Bluetooth control of mobile phones, etc)

ELECTRONIC BOOK LCD REPAIR JESTIN YONG