Logic
Overview
A burglar alarm that only sounds when a window is open AND the system is armed, OR when the panic button is pressed, is making a decision with exactly the same building blocks that control billions of transistors inside a CPU. Every decision a digital circuit makes, however complicated it looks from the outside, is built from a tiny handful of logic gates combining binary inputs into a binary output.
In this lesson you will learn what the AND, OR and NOT gates do and how the derived XOR gate is built from them, how to write Boolean expressions for a logic statement, how to build a complete and correct truth table for any expression, and how to turn a real-world problem into a logic statement of your own.
Objectives
- Be able to construct and interpret truth tables for a given logic statement (AND, OR, NOT)
- Be able to produce logic statements for a given problem
Lesson Note
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Lesson Evaluation
Congratulations on completing the lesson on Logic. Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.
You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.
Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.
- Which Boolean operator produces an output of 1 only when both of its inputs are 1? A) OR B) NOT C) AND D) XOR Answer: C
- How many rows does a complete truth table need for a logic statement with 3 inputs? A) 3 B) 6 C) 8 D) 9 Answer: C
- For inputs A=1 and B=0, what is the output of X = A XOR B? A) 0 B) 1 C) Undefined D) 2 Answer: B
- Which gate takes only one input? A) AND B) OR C) NOT D) XOR Answer: C
- In standard binary counting order, what are the four input rows for a 2-input truth table (A then B)? A) 11, 10, 01, 00 B) 00, 01, 10, 11 C) 00, 10, 01, 11 D) 01, 10, 00, 11 Answer: B
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Recommended Books
Practice Mock Questions
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