3-3 please

184 O PROBLEMS a solution is available on the text website. CHAPTER 3/COMBINATIONAL LOGIC DESIGN The plus (+) indicates a more advanced problem and the asterisk () indicates that 3-1. Amajority function has an output value of l if there are more is than 0s on its inputs The output is 0 otherwise. Design a three-input majority function. 3-2. Find a function to detect an error in the representation of a decimal digit in BCD. In other words, write an equation with value 1 when the inputs are any one of the six unused bit combinations in the BCD code, and value 0 otherwise. 3-3. Design a Gray code-to-BCD code converter that gives output code 1111 for all invalid input combinations. Assume that the Gray code sequence for decimal numbers 0 through 9 is 0000, 0001, 0011, 0010, 0110, 0111, 0101, 0100, 1100, and 1101. All other input combinations should be considered to be invalid. -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 first 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 g pattern. The ai