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Design a combinational circuit that takes four inputs ( E ( the enable ) , A , B , and C ) , has four
Design a combinational circuit that takes four inputs
E
the
enable
AB and C has four outputs XYZ and S the end of sequence flag and meets the following specifications. If ABC then, regardless of the value of E the end of sequence flag S else S If E then XYZABC. If E and ABC
then XYZ should be set to the code after ABC in this list: So if ABC then XYZ This is a type of Gray code sequence. If E and ABC then XYZ may be set to anything this is called a "don't care" and should be represented in the truth tables and Kmaps with antimes Notice that this is essentially a description of a four input, four output truth table aPreLab Create a truth table with the operands in this order EABCXYZS for this combinational circuit's function. The first three lines of the truth table look like this: bPreLab Write Boolean expressions for each output. Write the expressions as sum of minterms. c PPreLab Simplify each expression using a Kmap variable Kmaps will be usedShow the maps, minterm groupings, and final expressions. Remember there is a convenient Kmap template that is available if desired in the moodle resources section. d PreLab Create the logic circuit.
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