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##### I need to solve my homework for computer architecture and data structure.

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**Question**

1. Given f (A, B, C) =? (0, 3, 5, 6, 7). Realize this function;a. as a two-level AND-OR network. Assume that the inverted versions of the inputs are;already available.;b. as a two-level OR-AND network. Assume that the inverted versions of the inputs are;already available.;c. as a NAND-only network based on the SOP expression for f;d. as a NOR-only network based on the POS expression for f;2. Consider a 3-bit ripple-carry adder (RCA) circuit. Assume that the sum of each;constituent full-adder of this RCA is obtained using a 3-bit XOR gate that has a;propagation delay of 3 ns. The carry-out bit of each individual full-adder is generated;using AND and OR gates. These gates have a delay of 2 ns and 2 ns, respectively. What;is the overall delay of this RCA?;3. Show the complete design of a 2-bit ALU whose functionality is described in the table;below. The ALU receives two 2-bit-wide data inputs, A and B. It also has two 1-bit-wide;function-control inputs S1 and S0. Depending on the value of S1S0, the ALU performs and;outputs one of the functions specified in the table below;S1 S0 Function;0 0 ALU output = A;0 1 ALU output = A + B;1 0 ALU output = bitwise AND of A and B;1 1 ALU output = bitwise complement of A;4. Realize the function f (A, B, C) = A + BC using a decoder of the minimum possible size;and other logic gates, as necessary.;5. Design a full-subtractor using 4-to-1 multiplexers only. Assume that the inverted versions;of the full-subtractor inputs are already available.

Paper#68843 | Written in 18-Jul-2015

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