求翻译：本课题设计了一个简单的数字频率计，其主要是以触发器和计数器为核心，有信号输入、整形放大、触发、计数、数据处理和数据显示等功能模块组成。放大整形电路：对被测信号进行预处理，将其转换为同频的脉冲信号；闸门电路：由555构成一个秒信号，即时基信号，主要是攫取单位时间内进入计数器的脉冲个数；计数电路：记录单位时间内脉冲个数；译码显示电路：把十进制计数结果译成BCD码显示在数码管上。设计中采用了模块化设计方法，采用适当的放大和整形，提高了整个测量频率的范围和系统的测量精度。是什么意思？

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This topic has designed a simple digital frequency meter, and it is mainly to trigger and counter to the core, there is a signal input, shaping, and trigger, count, data processing and data display functions, such as modules. Plastic surgery to enlarge the Circuit: A pre-processing, signal will be c

This topic has designed a simple digital frequency meter, the main is the trigger, and counter to the core, signal input, plastic and magnified, trigger, counting, data processing, and data display function modules. Zoom plastic circuit: the measured signal preprocessing, will convert it to a pulse