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Cathode Control Circuit:
Parts List:
IC3
74141N/K155
S16
SOCKET 16
SV5
CONN_DIGIT
This part of the circuit controls which cathode will be lit. Each time the digit to be displayed, the correct
cathodes have to be set.
Notes:
Instead of the 74141, you might have the Russian equivalent "K155".
•
Be careful to orient the 74141 correctly
•
If you receive the connector header as a single strip, break off 10 pins for SV4.
•
Place the 16 pin socket and the connector, and then put the cathode driver on the board.
After you have done this, that part of the board should look like this:
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