Question
Implement a 4-bit subtractor using only full adders, logic gates, and 2:1 multiplexers. The 4-bit output should feed into a Hex Digit Display.In this lab, you will use LogiSim to implement a 4-bit subtractor circuit using FA blocks, logic gates, and Mux's provided by LogiSim. The output value will be displayed via a Hex Digit Display.Implement a 4-bit subtractor. Your circuit should include MUXs as per the design suggested in the lecture notes and video posted to your lecture Moodle page. Use four single-bit adders to construct your circuit. Connect the 4-bit output of the subtractor to a Hex Digit Display to see the magnitude of the answer. Simulate the circuit for the ten different combinations of 'A' and 'B' where some results of the subtraction are positive, some are negative, and some are equal. Record the input values and computed signs and differences in your notes for the lab report. Save your implementation as a Logisim circuit file named Lab9. Pertinent gates & modules in Logisim can be found in these folders: Gates, Inverters, Multiplexers (You can set the number of selectors), Arithmetic Adders (You should set the number of data bits to 1), Input/Output, Hex Digit Display, Wiring, Splitters.
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Submitted by Nicholas T. Feb. 14, 2023 03:34 p.m.
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Implement a 4-bit subtractor using only full adders, logic gates, and 2:1 multiplexers. The 4-bit output should feed into a Hex Digit Display.In this lab, you will use LogiSim to implement a 4-bit subtractor circuit using FA blocks, logic gates, and Mux's provided by LogiSim. The output value will be displayed via a Hex Digit Display.Implement a 4-bit subtractor. Your circuit should include MUXs as per the design suggested in the lecture notes and video posted to your lecture Moodle page. Use four single-bit adders to construct your circuit. Connect the 4-bit output of the subtractor to a Hex Digit Display to see the magnitude of the answer. Simulate the circuit for the ten different combinations of 'A' and 'B' where some results of the subtraction are positive, some are negative, and some are equal. Record the input values and computed signs and differences in your notes for the lab report. Save your implementation as a Logisim circuit file named Lab9. Pertinent gates & modules in Logisim can be found in these folders: Gates, Inverters, Multiplexers (You can set the number of selectors), Arithmetic Adders (You should set the number of data bits to 1), Input/Output, Hex Digit Display, Wiring, Splitters.
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Step 1
First, we need to design a 4-bit subtractor using full adders. A full adder takes three inputs: A, B, and a carry-in (Cin), and produces two outputs: a sum (S) and a carry-out (Cout). We can use four full adders to subtract two 4-bit numbers.
First, we need to design a 4-bit subtractor using full adders. A full adder takes three inputs: A, B, and a carry-in (Cin), and produces two outputs: a sum (S) and a carry-out (Cout). We can use four full adders to subtract two 4-bit numbers.
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Final Answer
Physics 102 Electricity and Magnetism Notes
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