functions

说明：  BUCK电路控制的设计方法，分析BUCK电路的传递函数框图，介绍如何设计BUCK电路的具体参数。(The control of BUCK circuit)

MSP430按键程序，用于检测按键的触发跳出睡眠模式(MSP430 key procedures for the detection of the trigger out of sleep mode button)

各种863.973项目申请书，对项目申请很有借鉴意义(Application of various project 863.973, is a reference for the project application )

可以实现陀螺仪角度检测以及角度时间在oled上的完美显示(The gyroscope angle detection and the perfect display of angle time on OLED can be realized.)

单片机4x4键盘程序，好用！！！！！！！！！！！！！！！！！！(dd)

说明：  stm32f407 ucGUI port

Cypress CY7C68013A USB GIF 高速接口编程接口FirmWall(Cypress semi cy7c68013a usb gif interface s firmwall)

松下车载碟机的协议代码，用于多种汽车的原车配备机头的扩展协议(Panasonic Car turntables protocol code, the original car used in a variety of vehicles equipped with head of the extended protocol)

说明：  You can use LSM6DS3 (3D accelerometer and 3D gyroscope) in NRF52832 (PCA10040 Dev Board). you can Check your current angle (degree) through your smartphone BLE monitor (nRF Toolbox for BLE application in playstore)(You can use LSM6DS3 (3D accelerometer and 3D gyroscope) in NRF52832 (PCA10040 Dev Board). you can Check your current angle (degree) through your smartphone BLE monitor (nRF Toolbox for BLE application in playstore) please open readme.txt in zip)

本系统基于反馈控制思想，由交直流转换电路、DC-DC变换器、步进电路模块和显示模块4个模块电路构成开关稳压电源。交直流转换电路整流部分采用全波桥式整流电路形式，DC-DC变换器以TL494有主核心设计并加上简单滤波电路及RC放电回路所构成的回路控制器。它能把脉冲宽度变化的信号转换成与脉冲宽度成正比变化的直流信号，进而实现闭环单回路控制。由单片机控制 数字定位器X9241的电阻,进而控制输出电压。显示模块由LCD1602构成。 (Based on feedback control of the system of thought, from AC-DC converter circuit, DC-DC converters, stepper circuit module and display module 4 module circuit switching power supply. AC-DC converter circuit using full-wave rectifier part of the circuit form of bridge rectifier, DC-DC converter to TL494 have the main core of the design and add a simple RC filter circuit and discharge circuit posed by the loop controller. It can change the pulse width signals into changes with the pulse width is proportional to the DC signal, and thus realize the closed-loop single-loop control. By the single-chip microcomputer to control the number of locator X9241 resistance, thereby control the output voltage. LCD1602 constituted by the display module.)