译码电路接收测量端模拟信号，转化为7段显示的数字信号，发送到数据锁存器上。
The A/D decoding circuit received simulation signal form measurement port and converted the signals into data signals which displayed by 7-segment, then signals were sent to data latch.
采样模拟信号，转化成数字信号。2）接口的连接问题。3）LED显示器如何接入电路。4） 如何进行显示控制。
Sampling analog signals into digital signals. 2) interface connectivity problems. 3) LED display to access the circuit. 4) How to display control.
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