设计并制作一台数字显示的简易频率计。

（二）要求

1.基本要求

(1)频率测量

a.测量范围 信号：方波、正弦波

幅度：0.5V～5V[注]

频率：1Hz～1MHz

b.测试误差≤0.1

(2)周期测量

a.测量范围 信号：方波、正弦波

幅度：0.5V～5V[注]

频率：1Hz～1MHz

b.测试误差≤0.1









键盘从上到下，从左到有依次为： 1 2 3 4

5 6 7 8

9 0 . 确认-Design and production of a simple digital frequency meter display. (B) 1. The basic requirements of (1) a. measuring range frequency measurement signal: square wave, sine wave range: 0.5V ~ 5V [Note] frequency: 1Hz ~ 1MHz b. test error of ≤ 0.1　(2) cycle measurement a. measuring range signal: square wave, sine wave range: 0.5V ~ 5V [Note] frequency: 1Hz ~ 1MHz b. Error ≤ 0.1　Test the keyboard from top to bottom, left to have followed: 1 2 3 4 5 67,890. confirm