Signed vs Unsigned Comparison Failure
A temperature controller activates a heating element when the ambient temperature falls below a target threshold.
Expected behavior:
Heater must output 1 when the 4-bit signed 2's complement Temp is strictly less than the 4-bit unsigned Thresh. Otherwise, Heater must output 0.
Simulation shows Heater = 0 for input Temp = 1111 (-1 decimal) and Thresh = 0101 (5 decimal). The heater incorrectly shuts off when the temperature drops below zero. Inspect the circuit and correct the fault.
Constraints
- Do not modify the input or output port definitions
- Ensure the fix accounts for the full 4-bit 2's complement range of
Temp
Topics
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