8-bit counter

229

01:59:40

The number is shown by LED 

published 5 years ago

wyoelk

5 years ago

Each led when in parallel as this needs a current limiting resistor to protect the LED. Here's a circuit and a website that helps explain it. _ _ _ http://everycircuit.com/circuit/4938814563549184 and http://lednique.com/parallel-leds/

Robert_Kidd

5 years ago

These LED’s are not in parallel. They do each need a resistor to drop the excess voltage. R=V/I=3/20mA=150 Ohms.

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