A Moore sequential circuit has three inputs (X2, X₁, and Xo) that specify a temperature range in a room. The circuit has two outputs (I and D) that control a heater for the room; I = 1 causes the heater to increase its heat output, and D = 1 causes the heater to decrease its heat output. If the temperature range is 0, 1, or 2 for three successive clock cycles, the circuit generates I = 1, and conversely if the temperature range is 5, 6, or 7 for three successive clock cycles, the circuit generates D = 1; otherwise, I = 0 and D = 0. 1. Draw a state diagram. 2. Construct a state table. 3. Using D flip-flops, construct a state assigned table. 4. Determine the next-state and output logic expressions. 5. Sketch the corresponding logic circuit.
A Moore sequential circuit has three inputs (X2, X₁, and Xo) that specify a temperature range in a room. The circuit has two outputs (I and D) that control a heater for the room; I = 1 causes the heater to increase its heat output, and D = 1 causes the heater to decrease its heat output. If the temperature range is 0, 1, or 2 for three successive clock cycles, the circuit generates I = 1, and conversely if the temperature range is 5, 6, or 7 for three successive clock cycles, the circuit generates D = 1; otherwise, I = 0 and D = 0. 1. Draw a state diagram. 2. Construct a state table. 3. Using D flip-flops, construct a state assigned table. 4. Determine the next-state and output logic expressions. 5. Sketch the corresponding logic circuit.
Chapter4: Processor Technology And Architecture
Section: Chapter Questions
Problem 4VE
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