rectangles

可以在液晶显示两个数计算结果，只能进行两个数的计算(The results can be calculated by two numbers in the liquid crystal display)

说明：  这是基于STM32F103ZET6的原子开发板精英版的跑马灯程序(This is an elite version of the Atomic Development Board based on STM32F103ZET6.)

DAC DMA成功输出正弦波，详细说明在程序中都有备注(DAC DMA Successfully Output Sinusoidal Wave)

说明：  西门子ppi通讯，新人上传的第一个代码，请多关注，谢谢大家了(Siemens PPI newsletter, the first code uploaded by newcomers, please pay more attention. Thank you.)

说明：  强噪声背景下弱信号检测，采用平衡式取样积分电路。包含电路原理，基于IAR的msp430f149的DDS脉冲程序和峰值检波程序，检波方法：sqrt(Acos^2+Asin^2)(Strong noise weak signal detection, the use of balanced sampling integrator circuit. Contains circuit theory, based on the IAR msp430f149 of the DDS program pulse program and peak detector)

自己画的四轴飞行器，原理图，pcb。。。。。。。。。。。。。。。。。。。。。。。为了20个子，我真的不容易(Own painting Four aircraft, schematics, pcb)

用单片机与MCP4725通信，产生一个可控制的模拟电压。(The MCP 4725 is communicated with a single chip computer to generate a controllable analog voltage.)

说明：  用PHILIPS P89LPC915 完成的A/D 和 D/A转换的C源程序.(Philips P89LPC915 complete with A/D and D/A conversion of the C source.)

GD32F303系列输出任意数量脉冲，频率数量都可控(GD32F303 series output any number of pulses, the frequency and quantity can be controlled.)

51单片机的示波器，所有资料,dajiakuaixia(an Oscilloscope by mini51)