Lesson Notes By Weeks and Term - Senior Secondary 2
Logic circuits
Logic circuits
Term: 1st Term
Week: 7
Class: Senior Secondary School 2
Age: 16 years
Duration: 40 minutes of 2 periods each
Date:
Subject: Computer Studies and ICT
Topic:- Logic circuits
SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to
INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers, demonstration, videos from source
INSTRUCTIONAL MATERIALS: Videos, loud speaker, pictures, Data Processing for senior Secondary Education by Hiit Plc, WAPB Computer Studies for Senior Secondary II by Adekunle et al, On-line Materials.
INSTRUCTIONAL PROCEDURES
PERIOD 1-2
|
PRESENTATION |
TEACHER’S ACTIVITY |
STUDENT’S ACTIVITY |
|
STEP 1 INTRODUCTION |
The teacher reviews the previous lesson on symbols of logic gates |
Students pay attention |
|
STEP 2 EXPLANATION |
He outlines the guidelines for constructing the truth table for each gates and actually constructs one
|
Students pay attention and participates |
|
STEP 3 DEMONSTRATION |
He explains how to write logical equations |
Students pay attention and participate |
|
STEP 4 NOTE TAKING |
The teacher writes a summarized note on the board |
The students copy the note in their books |
NOTE
CONSTRUCTION OF TRUTH TABLE FOR THE LOGIC GATES
The truth table is the table that shows the possible combinations of variable values in the equation and the result (output) for each of the logic gates.
For a two-input truth table, there will be 4 (22) possible combinations of variable inputs and generally for n-input truth table, there will be 2n possible combinations of the input variables. See the examples below:
EVALUATION: 1. An OR gate has 3 inputs and 1 output. Show the truth table for this OR gate.
CLASSWORK: As in evaluation
CONCLUSION: The teacher commends the students positively