dual_ram

99秒马表，在Proteus设计两个数码管动态显示及一个键盘SP。在ucos下结合keil完成开始时，显示“00”，第1次按下SP后就开始计时。 第2次按SP后，计时停止。第3次按SP后，计时归零。 (99 seconds stopwatch, two in the Proteus design dynamic digital tube display and a keyboard SP. Keil in combination ucos completed under the beginning of the show " 00" , 1st timer after pressing the SP. 2nd by SP, the time to stop. The 3rd by the SP, the time zero.)

说明：  AD9910-STM32F103-全国电子设计大赛DDS发送端代码 2017年全国电子设计大赛H题(AD9910-STM32F103-DDS Sender Code for National Electronic Design Competition Question H of the 2017 National Electronic Design Competition)

说明：  坦克车体的源代码，对电子设计大赛有一定的帮助(Tank body source code, electronic design competition has certain help)

可以用来参考RRN8302B校表设计，基于51系列单片机，可参考使用(Can be used for reference RRN8302B calibration design,Based on 51 series MCU, it can be used for reference.)

2015全国电子设计大赛，万向节解释，应用等，帮助大家理解。(2015 National Electronic Design Competition, gimbal interpretation, application, etc., to help you understand.)

OLEDSTM32源码，亲测可用（当然线要接对）(The translator doesn t work)

利用单片机SCMAD口与热敏电阻阻简单实现测温电路及程序可直接使用。 (SCMAD mouth with the use of single-chip thermistor temperature measurementt circuit to achieve a simple and complete source code can be used directly. )

用89s51做的车辆引导系统,在狭小的长距离单通道时避免会车(89s51 do with the vehicle guidance system, in a small single channel to avoid long-distance truck will)

HC-SR501人体红外感应模块软硬件资料，基于ST平台的STM32F10x单片机，包含jpg格式的电路图，常见问题，模块说明，和程序源码(HC-SR501 human infrared sensor module software and hardware information, STM32F10x based on ST platform, including JPG format circuit diagram, common problems, module description, and program source code)

6 基于义隆单片机开发的PWM在按摩机上的应用99se电路图(6 Based on Elan microcontroller development of the PWM in the massage machine application 99se circuit )