First Circuits

These are my very first circuits, that I devised.

This one will shift a single lit LED in every clock pulse. It uses a HCF4017 Decade Counter, and NE555 in astable mode as a clock.


This one will produce a train of lit LEDs. It uses two NE555 in astable mode, on as a serial data input, and other as a clock, and a 74HC595 Shift Register.


The Train length sometimes is apparently random, because I didn’t fine tune the timing of the data input, and the shift clock.

I tested these circuits on breadboard, and it worked fine.

This entry was posted in Uncategorized and tagged , .

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s