microcontroller_in_the_application_of_practical_te

将每2片74595做级联，然后再将级联之后的所有时钟线与数据再并联在一起最后对每一组的锁存控制线做单独控制.(Application to do a project, the more I/O, applied to the 74,595 to do the extension, but you want to mount multi-chip 74595, is bound to have a lot to use the I/O port, in order to solve this problem, I will be every 2 sheet 74595 do cascade, and then cascade after all the clock line and the data in parallel and then together (i.e., all 74595 communal clock and data lines, it only occupies two I/O port lines) Finally, for each group latch control lines do individually controlled (equivalent to Chip Select), so that a hardware circuit by a great degree of simplification, both procedures can also share a driving subroutine 74595, to control the type of lock inventory control line, serial data is sent to the port 74595 cascade module. As a result of the hardware and software have a large degree of optimization.)

说明：  stm32与fpga进行spi通信，fpga进行测频，占空比，时间间隔测量，32可控制其运行模式，并将测得结果于lcd上进行显示。(STM32 communicates with FPGA in spi. FPGA measures frequency, duty cycle and time interval. 32 can control its operation mode, and display the measured results on lcd)

一个能读取DHT11湿度传感器的程序，使用STM8S003K3P6(A program to read DHT11 humidity sensor)

这是avr单片机键盘实验的程序很好很实用在此先给大家，非常全面的(Avr microcontroller is a good keyboard is very useful experimental procedure we give in this very comprehensive)

一款基于SED1335的液晶驱动程序，用C编写，适合初学者借鉴！(One based on the SED1335 LCD driver, written in C, suitable for beginners learn!)

说明：  华为电路仿真培训教程，基于Hyperlyn平台仿真信号完整性电源完整性等高速PCB仿真设计平台(Huawei Circuit Simulation Training Course)

根据器件扫频测试结果，处理数据得到器件的幅频和相频特性(According to the device sweep test results, process the data obtained amplitude-frequency and phase-frequency characteristics of the device)

说明：  高升压比boost电路仿真电路图，通过两级boost电路达到升压要求(High step-up circuit simulation than the boost circuit, two-stage boost circuit to boost through the requirements)

stm32f401使用ad模块pcf8591(using pcf8591 by the stm32f401)

利用空气预热器加热电除尘器灰斗的技术经济性分析.(The use of air preheater heating ESP hopper technical and economic analysis.)