Debug 7-Segment Decoder Segment G
A BCD to 7-segment decoder converts a 4-bit binary value into signals that drive a standard LED display. Segment g controls the middle horizontal bar and must activate only for specific digits.
Expected behavior:
| D3 | D2 | D1 | D0 | g | |------|------|------|------|-----| | 0 | 0 | 0 | 0 | 0 | | 0 | 0 | 0 | 1 | 0 | | 0 | 0 | 1 | 0 | 1 | | 0 | 0 | 1 | 1 | 1 | | 0 | 1 | 0 | 0 | 1 | | 0 | 1 | 0 | 1 | 1 | | 0 | 1 | 1 | 0 | 1 | | 0 | 1 | 1 | 1 | 0 | | 1 | 0 | 0 | 0 | 1 | | 1 | 0 | 0 | 1 | 1 |
Simulation shows g = 1 for input D3=0, D2=0, D1=0, D0=1. The middle bar illuminates incorrectly, causing digit 1 to display as a backwards Z. Inspect the circuit and correct the fault.
Constraints
- Do not modify the input or output pins.
- Only standard logic gates are permitted.
Topics
Solve this problem
Place the gates, wire them up and watch the signals settle. Every submission runs on the same simulation engine that grades it.
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