使用Excel做得一个表格,用于产生sin波形的数据,一般用于DSP算法测试,嵌入式液晶显示屏画图.-Use Excel to do a table for the production of sin waveform data, the general test for DSP algorithms, embedded LCD screen drawing.

用STC15W4KxxS4系列单片机输出两路互补的SPWM，带头文件及excel正弦波表计算。-STC15W4KxxS4 series microcontroller output with two complementary SPWM, lead and excel file to calculate sine table.

硬件设置小工具，电阻值计算excel，表列出了常用电阻值，只需要输入电源电压，需要电压俩个电压值，就可以算出分压电阻，误差5 以内会有绿色标注-Hardware settings gadgets, resistance calculation excel, table lists the commonly used resistance, only need to input power supply voltage, the need to voltage two voltage values