Q18 Find the expression for the output of the logic circuits shown in Figure below. A B D - F

Consider the circuit below. The switches are controlled by logic variables such that, if A is high, switch A is closed, and if A is low, switch A is open. Conversely, if B is high, the switch labeled is open, and if B is low, the switch labeled is closed. The output variable is high if the output voltage is 5V, and the output variable is low if the output voltage is zero. a. Write a logic expression for the output variable. b. Construct the truth table for the circuit. A Logic 1 5V(+ B C Logic 0 R

(a) A logic circuit shown in Figure Q.3 has a 4-bit input A and B, three 4-bit wide 2:1 muxes, a 4-bit adder, a 4-bit output F, and a carry flag C. For the given Table Q.3, fill in the value of output F and carry flag C for the given value of A, B, S0, S1 and S2. 51 52 1001 Flag C 0011 Figure Q.3 Table Q.3 A So S1 S2 F Flag C 0001 1000 0010 1001 1 1 0011 1101 0100 1101 1110 0111 1

Design a 5 bits input logic circuit that can be output F to go active (High) under the following conditions: - All inputs are logic 1" - An odd number of inputs are logic 1" - Non of the inputs are logic 1"

Reduce the Boolean function specified in the truth table below to its minimum SOP form using K-map, where A, B, C are the inputs while X are the outputs. Based on the reduced Boolean function, design the logic circuit using any logic gates. A 0 0 0 0 1 1 1 1 B 0 0 1 1 0 1 с 0 1 0 1 0 1 0 1 X 1 1 0 1 1 1 0 1

Digital Logic Design4-bit Binary Adder / Subtractor

Electrical engineering need to design the following a room with four door, one lamp, the lamp will turned on ( logic one) if a one door is opened, or three doors is opened Otherwise the lamp turned off ( logic zero)

1. Design a combinational logic circuit with three inputs A, B and C and one output X. When only one input is 1, output is 1. When none of input is 1, output is also 1. Otherwise, output is 0.

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