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February 14th, 2011 03:10 PM #1
I'm trying to design a simple circuit that would display a digit from 1-5 on a 7-segment LED display. I just need the logic gate layout (using AND, NAND, OR, NOR, XOR, XAND, etc.)
I have four logic inputs, A, B, C, & D. Output is a 7-segment LED display.
The truth table are as follows:
Format:
ABCD = Output Display [1-5]
1110 = "1"
0101 = "2"
0010 = "3"
1000 = "4"
1011 = "5"
Any other value combinations, the 7-segment display should be blank (off).
As can be seen, it needs more than just a BCD to 7-segment display decoder.
All I need is the logic gate layout. I can work on the acquisition of the parts as well as assembly. It would also help if you can refresh me on how you came up with the solution.
Thanks!
Choice I would have made as well.:nod:
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