1. In the keypad encoder, the ________ must hold in its current state until a key is released.





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MCQ->In the keypad encoder, the ________ must hold in its current state until a key is released.....
MCQ->Refer to the keyboard encoder in figure (a). Sometimes when the 5 key is pressed, the system attached to the keypad does not respond. The 5 input on the 74147 is monitored with a digital storage scope while repeatedly pressing the 5 key, and the waveform in figure (b) is obtained; the P above the trace indicates the points at which the technician pressed the key. What is most likely wrong with the circuit?

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