使用89C52单片机输出PWM的汇编源码-The use of 89C52 single-chip PWM output of the compilation of source code

用于89c52,仿PLC做工业控制的原码,-For 89c52, imitation PLC industrial control so the original code,

用单片机控制触摸屏，控制芯片89C52，ADS7843，实现手写功能和存储功能-Touch screen control with single-chip microcomputer to control the chip 89C52, ADS7843, the achievement of hand-written features and storage capabilities

包里有AD0809的源程序以及相关的外围电路pdf资料，通过将LM324N配置成反相比例缩小和电压跟随对外部电压信号降压，以及通过CD4081和89C52的ALE脚向AD0809输入500K的方波，从而实现89C52的AD采集。-The source code package with AD0809 and related peripheral circuits pdf information configured by LM324N RP scaled down and the voltage