基于TLC549A/D转换器与AT89S52单片机的数字电压表设计

摘要

An A/D chip TLC549 convert the output of the voltage measurement circuit. The controller AT89S52 deal with the A/D result, and finally drive the output device LCD 1602 to display digital voltage signal. The system has high precision, strong anti-interference,fast,and stable performance, suitable for general electronic system voltage measurements,with good use-value.%采用A/D转换器TLC549对电压测量电路测出的输人模拟信号电压值进行转换,控制核心AT89S52再对转换的结果进行运算和处理,最后驱动输出显示装置LCD1602显示数字电压信号.该系统具有精度高、抗干扰性强、速度快、性能稳定等特点,适用于一般电子系统的电压测量,具有很好的使用价值.