摘要
Abstract
In order to meet the great necessity of multi-function, high-precision digital frequency meter with a lower price, we choose the common cheap components, and use microcontroller to produce the basic clock signal to minimize the peripheral circuit. A design of frequency meter based on microcontroller (AT89C51) and LCD1602 is proposed, which has the properties of small size, low cost, high precision and wide frequency bandwidth.关键词
单片机/频率计/液显Key words
AT89C51/Frequency Meter/Liquid Crystal Displ分类
信息技术与安全科学
