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Ten-digit key password switch circuit composed of CD4066 and CD4043
Source: InternetPublisher:李商隐身 Keywords: Switching Circuit Updated: 2024/08/05
The password switch shown in the figure has a total of 10 buttons, of which there are 5 valid buttons and the remaining 5 are pseudo-code buttons. The pseudo-code buttons have a reset function, so the password switch has good confidentiality. Its circuit composition is shown in the figure, which consists of a password input button, a password formation and output circuit, and a control and execution circuit.
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