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[5 marks] (c) In a system there are three buttons. (A, B and C) and a lamp (X). The lamp only comes on if the following is not true: A is pressed, and B or C is pressed. The logic statement for this circuit can be written as follows: If NOT( (A is pressed) AND (B is pressed or C is pressed)) then X will light up. Simplified: X = NOT(A AND (B OR C)). Draw the logic circuit for this statement using any suitable gates to give the required result and write down the truth table for it.

[5 marks] (c) In a system there are three buttons. (A, B and C) and a lamp (X). The lamp only comes on if the following is not true: A is pressed, and B or C is pressed. The logic statement for this circuit can be written as follows: If NOT( (A is pressed) AND (B is pressed or C is pressed)) then X will light up. Simplified: X = NOT(A AND (B OR C)). Draw the logic circuit for this statement using any suitable gates to give the required result and write down the truth table for it.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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[5 marks] (c) In a system there are three buttons. (A, B and C) and a lamp (X). The lamp only comes on if the following is not true: A is pressed, and B or C is pressed. The logic statement for this circuit can be written as follows: If NOT( (A is pressed) AND (B is pressed or C is pressed)) then X will light up. Simplified: X = NOT(A AND (B OR C)). Draw the logic circuit for this statement using any suitable gates to give the required %3D result and write down the truth table for it. (d) For the following circuit [6 marks] (i) Explain the working of this circuit, (ii) Write its truth table and (ii) Write down the name of the circuit. (iv) Explain what happens if you connect the switches in circuit between the input pins and ground, as shown in as shown figure 3.d.2. Sw 14 4700 LED 10KOS10KO Sve 4700 LED Ov Figure 3.d.1 Sw 14 4700 LED 10KO KOS10KO Sve 4700 LED Figure 3.d.2
Transcribed Image Text:[5 marks] (c) In a system there are three buttons. (A, B and C) and a lamp (X). The lamp only comes on if the following is not true: A is pressed, and B or C is pressed. The logic statement for this circuit can be written as follows: If NOT( (A is pressed) AND (B is pressed or C is pressed)) then X will light up. Simplified: X = NOT(A AND (B OR C)). Draw the logic circuit for this statement using any suitable gates to give the required %3D result and write down the truth table for it. (d) For the following circuit [6 marks] (i) Explain the working of this circuit, (ii) Write its truth table and (ii) Write down the name of the circuit. (iv) Explain what happens if you connect the switches in circuit between the input pins and ground, as shown in as shown figure 3.d.2. Sw 14 4700 LED 10KOS10KO Sve 4700 LED Ov Figure 3.d.1 Sw 14 4700 LED 10KO KOS10KO Sve 4700 LED Figure 3.d.2
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