5. In the circuit implementation of an 8-bit adder, explain why the carry bit connection of the least- significant bit is connected to ground. Explain in words what values for A, B, C, D, E will cause a 1 to appear at point X. The circuit below uses a 5-input AND gate. Draw the equivalent circuit using only 2-input gates. A. B D.

hi, i have a problem with this logic gate question. can you please help me.

JOIN 3 circuits below(1,2 and 3) in a carry-ripple adder configuration and demonstrate binary addition of two three-bit numbers using a minimum of four number pairs that include both negative and positive numbers (signed 2s complement representation) and at least one overflow result. Circuit 1: a full-adder using any combination of gates from the following ICs: 7400, 7404,7408, 7410, 7420, 7432, and 7486 Circuit 2: a full-adder using a single 74138 IC and any additional assorted gates that may be necessary Circuit 3: a full-adder using a single 74138 IC and assorted gates.

Using full adders in block diagram, other needed logic gates. Show the design of a circuit that performs A – B based on using 2's complement arithmetic where A and B are two unsigned 4-bit numbers. State the condition for error in your design.