Repeat Problem 3-4 for 4 x 4 tic-tac-toe, which is played on a four-by-four grid. Assume that

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Repeat Problem 3-4 for 4 x 4 tic-tac-toe, which is played on a four-by-four grid. Assume that the numbering pattern is left to right and top to bottom, as in Problem 3-4.

Problem 3-4

A simple well-known game, tic-tac-toe, is played on a three-by-three grid of squares by two players. The players alternate turns. Each player chooses a square and places a mark in a square. (One player uses X and the other O.)
The irst player with three marks in a row, in a column, or on a diagonal wins the game. A logic circuit is to be designed for an electronic tic-tac-toe that indicates the presence of a winning pattern. The circuit output W is a 1 if a winning pattern is present and a 0 if a winning pattern is not present. For each of the nine squares, there are two signals, Xi and Oi . Two copies of the circuit are used, one for Xs and one for Os. Form a condensed truth table for W(X1, X2, . . . . X9).

(a) Design the X circuit for the following pattern of signals for the squares:

X X X3 X4 X5 X6 X7 X8 X9

(b) Minimize the W output for the X circuit as much as possible, using Boolean algebra.

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Related Book For  answer-question

Logic And Computer Design Fundamentals

ISBN: 9780133760637

5th Edition

Authors: M. Morris Mano, Charles Kime, Tom Martin

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