Question
For each the following scenarios: - build the truth table; - derive the corresponding boolean expression, and simplify it to the extent possible; and -
For each the following scenarios:
- build the truth table;
- derive the corresponding boolean expression, and simplify it to the extent possible; and
- construct the digital circuit using logisim, and embed the png image.
1)
Given four inputs: a, b, c & d, where (a, b) represents a 2-bit unsigned binary number X; and (c, d)
represents a 2-bit unsigned binary number Y (i.e. both X and Y are in the range #0 to #3).
The output is z, which is 1 whenever X > Y, and 0 otherwise (this circuit is part of a "2-bit comparator").
For instance, if a = 1, b = 0 (i.e. X = b10 => #2); c = 0, d = 1 (i.e. Y = b01 => #1); then z = 1, since b10 > b01
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