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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
A famous logic designer decided to quit teaching again and make a fortune by licensing a circuit design, this time the one shown in Figure X6.70.
(a) Label the inputs and outputs of the circuit with appropriate signal names, including active-level indications.
(b) What does the circuit do? Be specific and account for all inputs and outputs.
(c) Draw the logic symbol that would go on the data sheet of thi circuit.
(d) Write an ABEL or behavioral VHDL or Verilog program for the circuit.
(e) With what standard building blocks does the new circuit compete? Do you think it would be successful as an MSI part?

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Q63
A 16-bit barrel shifter is a combinational logic circuit with 16 data inputs, 16 data outputs, and 4 control inputs. The output word equals the input word, rotated by a number of bit positions specified by the control inputs. For example, if the input word equals ABCDEFGHIJKLMNOP (each letter represents one bit), and the control inputs are 0101 (5), then the output word is FGHIJKLMNOPABCDE. Design a 16-bit barrel shifter using combinational MSI parts discussed in this chapter. Your design should contain 20 or fewer ICs. Do not draw a complete schematic, but sketch and describe your design in general terms and indicate the types and total number of ICs required.
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