该数据选通器主要由CMOS传输门和CMOS移位寄存器构成，能同时适用于数字信号与模拟信号。
This device is constituted by CMOS transmission and CMOS shift register and is able to apply to the digital signal and analog signal at the same time.
利用四位双向移位寄存器等电子元件可制作能直观显示直流电流方向的模拟演示仪。
Four-bit bidirectional shift register was used to produce the device for demonstrating the direction of direct current.
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