![]() ![]() The approximate result of the final circuit is also included. Clock signal generator printed circuit Board (PCB)Ī suggested Printed Circuit Board (PCB) for the Clock signal generator using 7400 IC, is shown on the following diagram. Find the best pricing for NTE Electronics NTE74121 by comparing bulk discounts from 4 distributors. LED lights intermittently, showing the correct operation of the circuit. NTE7420 Integrated Circuit TTL Dual 4Input Positive NAND Gate Description: The NTE7420 contains two independent 4Input NAND gates in a 14Lead plastic DIP type package. ![]() With a logical “1” at inputs of gate IC1b, its output goes to logical “0”. ![]()
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