1 2 3 F₁ 4 5 6 7 5₂ 8 9 . # T3 T C1 C₂ C3 C4 The keypad has seven output lines, three for row and four for column locati

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1 2 3 F 4 5 6 7 5 8 9 T3 T C1 C C3 C4 The Keypad Has Seven Output Lines Three For Row And Four For Column Locati 1 (22.84 KiB) Viewed 29 times

1 2 3 F₁ 4 5 6 7 5₂ 8 9 . # T3 T C1 C₂ C3 C4 The keypad has seven output lines, three for row and four for column locations, respectively. When a key is pressed, corresponding row and column lines will produce logic level 1. Use VHDL to design a combinational circuit working as a keypad decoder. The input of the circuit will be output lines of the keypad. The output of the circuit will be the corresponding binary number in four bits. If or # key is pressed, the output of the circuit will be zero. . 0