DE2262

说明：  2015年电赛国测题，频率测量。基于stm32的频率测量。优点：精密度高，代码简单(In 2015, the National Test of Electricity Competition, Frequency Measurement. Frequency measurement based on stm32. Advantages: High precision, simple code)

CPU正在执行一项任务A，然后突然停止任务A去执行任务B，执行完任务B再回来继续执行任务A的过程。(CPU is performing A task. A, then suddenly stop tasks to perform A task B, perform the task B come back again continue to perform the task A process.)

本设计为330kV变电站初步设计，分为主变压器选择、主接线、短路电流计算、电气设备的选择等几部分，同时附有电气主接线图等图纸加以说明。(the design of the preliminary design 330kV substation, the main transformer sub-choice, the main wiring, short-circuit current, Electrical equipment options, etc., along with electrical wiring map drawings show.)

电池与超级电容的混合储能装置，电池由于功率的限制，主要由超级电容向线路上提供功率。(The circuit illustrates a simple hybridization of a supercapacitor with a battery. The supercapacitor is connected to a Buck/Boost converter and the battery is connected to a Boost converter. Power of the battery is limited by a rate limiter block, therefore the transient power is supplied to the DC bus by the supercapacitor.)

说明：  可以用于开发微星公司旗下dspic2010单片机程序，windows操作系统可以安装(Can be used to develop MSI company's dsPIC2010 MCU program, windows operating system can be installed)

LCD 12864液晶驱动显示程序，ST7565驱动芯片，自定义汉字库(LCD 12864 LCD display driver program, ST7565 driver chips, custom Store)

ds18b20的源程序，个人认为注释写的不错(ds18b20 source, personally think that writing a good note)

音乐程序(Music program)

用 Multisim 11 设计的电子密码锁，实现功能：1、3位串行输入；2、位多或位少错，红灯亮；3、次错报警，蜂鸣器叫；4、输入管理员密码可开。5、正常开绿灯亮。(Design a electronic coded clock by Multisim 11.)

数模转换芯片DA0832直通方式驱动一个发光二极管，由暗到亮循环( )