1.How can an AND gate be used in a basic alarm system requiring two conditions?
2.How can an OR gate model a system where either of two conditions activates an output?
3.Draw a block diagram for an alarm system using an AND gate with two inputs.
4.Convert a block diagram with an OR gate (Switch A, Switch B → Light) into a logic diagram.
5.How can a NOT gate be used in a simple day-to-day problem?
Ruwan Suraweera Changed status to publish April 25, 2025
1.
Answer: An AND gate can represent an alarm that triggers only if both a door sensor (A) and a motion sensor (B) are activated (A=1, B=1 → Output=1).
Description: This real-world example shows how Boolean logic applies to security systems. The AND gate ensures the alarm only sounds when both conditions are met, teaching practical application.
Description: This real-world example shows how Boolean logic applies to security systems. The AND gate ensures the alarm only sounds when both conditions are met, teaching practical application.
2.
Answer: An OR gate can represent a light turning on if either a switch (A) or a sensor (B) is activated (A=1 or B=1 → Output=1).
Description: This question connects OR logic to everyday scenarios, like lighting control, helping students see its utility in decision-making systems.
Description: This question connects OR logic to everyday scenarios, like lighting control, helping students see its utility in decision-making systems.
3.
Answer: [Input A: Door Sensor] → [AND Gate] ← [Input B: Motion Sensor] → [Output: Alarm]
Description: Drawing a block diagram teaches students to visualize logic flow. Here, the AND gate combines two inputs to produce one output, reinforcing system design skills.
Description: Drawing a block diagram teaches students to visualize logic flow. Here, the AND gate combines two inputs to produce one output, reinforcing system design skills.
4.
Answer: A logic diagram shows two inputs (A, B) feeding into an OR gate, with the output labeled as the light. Symbol: A──┐
B──┘OR → Light
Description: Converting block to logic diagrams builds understanding of symbolic representation in Boolean logic, a key skill for circuit design.
B──┘OR → Light
Description: Converting block to logic diagrams builds understanding of symbolic representation in Boolean logic, a key skill for circuit design.
5.
Answer: A NOT gate can turn off a fan (Output=0) when a switch is on (Input=1), inverting the switch’s state.
Description: This example shows how NOT gates reverse conditions in real systems, like home appliances, making Boolean logic relatable and practical.
Description: This example shows how NOT gates reverse conditions in real systems, like home appliances, making Boolean logic relatable and practical.
Ruwan Suraweera Changed status to publish April 1, 2025
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