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Digital Fundamental. QUESTION 4 (20 marks) Design an Adder Subtractor circuit that performs 2s complement addition and subtraction for two 4-bit numbers A-A3AzAAo and B-BB2B,Bo

Digital Fundamental. image text in transcribed
QUESTION 4 (20 marks) Design an Adder Subtractor circuit that performs 2s complement addition and subtraction for two 4-bit numbers A-A3AzAAo and B-BB2B,Bo You may use the following component Carry Out (CR) -11 Bit Full Adder- Carry in (Ca) . Sum (S)

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