Digital Electronics And Logic Gates
Chapter Name : Semiconductor Electronics: Materials, Devices And Simple Circuits |
Sub Topic Code : 101_12_14_10_01 |
Topic Name : Digital Electronics And Logic Gates |
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Sub Topic Name : Digital Electronics And Logic Gates |
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Introduction
Two types of signals are generally used in the electronic devices. Analogue and Digital.
Pre-Requisites:
Introduction about signals
Activity:
See the various signals producing by the cathode ray oscilloscope and identify the type of signals.
Real Life Question:
“Name any two instruments which use digital signals?” “Why digital system is called the binary system?”
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Analogue signals | Those signals which depend on the time i.e. varies with time. |
| Digital signals | Those signals in which only two values of inputs are possible. |
| Logic Gates | Basic unit of any electronic circuit. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Cathode Ray Oscilloscope | See the pattern of the signals producing by it on the screen. |
Real life uses :
Many devices such as, Radio, Transistor, television, amplifiers, computers, wathces etc.
Places to visit :
Your school physics lab, and you can also see any electronic device at home to see its basic content.
Practical examples around us
| Examples | Explainations |
|---|---|
| All the electronic devices | Logic gates are used in all these devices as the basic unit of the construction. |
What you learn in Theory:
Two types of signals are there in any electronic system. Logic gates are the smallest unit by which electronic devices are made up of.
What you learn in Practice:
Electronic devices in daily practice use the digital system of signals i.e. they have only two inputs ON or OFF.