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Question:

Does the 16*16 LED dot resistor and triode have to be connected?

After my circuit is connected by PROTEUS, the interface between 74HC373 and 74LS138 doesn't know how to connect to the dot matrix.I picked up a few and tried, the lights were all lined up.Check on the Internet, it seems to be connected to the transistor and resistor limit flow what.

Answer:

1, 74LS138 as line decoding signal, connect the transistor (or integrated chip 4953) to drive the LED dot matrix;2, 74HC373 as column drive, receive the LED dot matrix column, it is best to series resistance. Series resistance is generally red LED dot matrix, 50 ou ~100 ou, green LED dot matrix series 20, a few Ou or 10 a few OU on the line.
No, you take the data directly from 373, and 138 should be ok. I use 595 to do the line input.
16*16 LED dot matrix must be connected resistors and transistors, if the direct connection is not bright.

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