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本文介绍了一种采用ＡＴ８９Ｃ５１单片机Ｔ０定时器／计数器，通过测量７１３５Ａ／Ｄ转换器的ＢＵＳＹ脉冲信号宽度，由软件计算出被测模拟电压的一种方法。在智能仪器中节省了单片机的口线，提高了系统资源的利用率。
This article describes a method using AT89C51 microcontroller T0 timer / counter, measured by the 7135 A / D converter BUSY pulse width, measured by the software simulation of the measured voltage. In the smart instrument to save the MCU port line, improve the utilization of system resources.