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A Yellow light-emitting diode (LED) is a semiconductor light source
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Decade Counter IC - 74HC90 Incubator A Yellow light-emitting diode (LED)Decade Counter IC 74HC90 The 74HC Series 74HC90 Decade Counter IC having 4. 75 to 5. 25V Supply Voltage with 8mA Low Level and 0. 4mA High Level Output Current. It is a simple counter, it can count from 0 to 9 cyclically in its natural mode. It counts the input pulses and the output is received as a 4 bit binary number through pins QA, QB, QC, and QD. The binary output is reset to 0000 at every tenth pulse and the count starts from 0 again. Used For
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