PWM
代码说明：
利用STC15单片机实现对称PWM输出，可设置频率、占空比，利用JLX12863显示。( symmetrical PWM output based on STC15 MCU， frequency and duty cycle can be setted, use JLX12863 display.)
文件列表：
PWM发生器.SchDoc,138240,2015-05-29
程序
....\delay.c,373,2015-05-29
....\delay.h,246,2015-04-12
....\delay.LST,1438,2015-05-29
....\delay.OBJ,1625,2015-05-29
....\JLX12864.h,1055,2015-05-28
....\key.h,569,2015-05-28
....\keyscan.c,2196,2015-05-28
....\keyscan.LST,4897,2015-05-29
....\keyscan.OBJ,9579,2015-05-29
....\LCD.c,5551,2015-05-28
....\LCD.LST,12153,2015-05-29
....\LCD.OBJ,17298,2015-05-29
....\PWM,36345,2015-05-29
....\PWM.hex,9527,2015-05-29
....\PWM.lnp,97,2015-05-29
....\PWM.M51,33151,2015-05-29
....\PWM.plg,157,2015-06-01
....\PWM.uvopt,61453,2015-05-29
....\PWM.uvproj,13913,2015-05-28
....\PWM1.C,3616,2015-05-29
....\PWM1.LST,7634,2015-05-29
....\PWM1.OBJ,12611,2015-05-29
....\PWM_uvopt.bak,61432,2015-05-29
....\PWM_uvproj.bak,13745,2015-05-28
....\STARTUP.A51,6376,2009-05-07
....\STARTUP.LST,14049,2015-05-29
....\STARTUP.OBJ,749,2015-05-29
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