用二个16:1 取样
http://www.nxp.com/documents/data_sheet/74HC_HCT4067.pdf
接二个电压表.
记数器,产生控制信号
http://www.onsemi.com/pub_link/Collateral/MC74HC4060A-D.PDF
也可以用用二个16:1 取样反接
2x16个LED来代替1个2X7段通道LED.
用二个16:1 取样
http://www.nxp.com/documents/data_sheet/74HC_HCT4067.pdf
接二个电压表.
记数器,产生控制信号
http://www.onsemi.com/pub_link/Collateral/MC74HC4060A-D.PDF
也可以用用二个16:1 取样反接
2x16个LED来代替1个2X7段通道LED.
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