EEE058 Digital Electronics
Lecture 1
10/04/2019
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Guidelines and tips
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
binary mumbers, ocatal numbers, Lecture notes of Number Theory
conversion of numbers in digital logic
Typology: Lecture notes
2018/2019
1 / 59
This page cannot be seen from the preview
Don't miss anything!
Related documents
Partial preview of the text
Download binary mumbers, ocatal numbers and more Lecture notes Number Theory in PDF only on Docsity!
EEE058 Digital Electronics Lecture 1
Introduction
to
Digital
Electronics
Analog versus Digital
Analog systems process time-varying signals that can take on any value across a continuous range of voltages (in electrical/electronics systems).
- (^) Digital systems process time-varying signals that can take on only one of two discrete values of voltages (in electrical/electronics systems). - (^) Discrete values are called 1 and 0 (ON and OFF, HIGH and LOW, TRUE and FALSE, etc.)
Representing Information Electronically
A light bulb has to represent 4 different information: Bulb off- no student inside Bulb 1/3 lit - 1 student inside Bulb 2/3 lit - 2 student inside Bulb Full lit - 3 student inside
- (^) A light bulb has to represent 10 different information: - (^) Is it possible to differentiate the ten different light intensity? 10/04/
Representing Information Electronically
- (^) “Analog electronics” deals with non-discrete values
- (^) “Digital electronics” deals with discrete values
Benefits of Digital over Analog
Reproducibility
- (^) Not effected by noise means quality
- (^) Ease of design
- (^) Data protection
- (^) Programmable
- Speed
- (^) Economy
Digital Logic
- (^) Number System
Number System
- (^) A number system is a code that uses symbols to count the number of items. The most common and familiar number system is the decimal number system. The decimal number system uses the symbols 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9. Thus, the decimal system uses 10 digits for counting the items.
- (^) A binary system uses only two digits (0 and 1) for counting the items.