# Number System

##### Video Lessons & Revision Notes

Number System - Basic Concepts and Introduction to Binary Numbers
1. Number System - Basic Concepts and Introduction to Binary Numbers
In this 45 mins Video Lesson
Number System: Introduction, Binary Number System, Decimal To Binary, One's Complement, Two's Complement, and other topics.
Signed Binary Numbers and Binary Addition
2. Signed Binary Numbers and Binary Addition
In this 44 mins Video Lesson
Signed Number Representation, Sign Magnitude Method, One's Complement Method, Two's Complement Method, Comparison of Above methods, Padding MSB with Sign Bits, Binary Addition, Bianry Subtraction, and other topics.
Binary Arithmetic and Introduction to Octal Numbers
3. Binary Arithmetic and Introduction to Octal Numbers
In this 51 mins Video Lesson
Binary Subtraction: 1's complement Method, Binary Subtraction: 2's Complement Method, Binary Signed Number Arithmetic, Binary Multiplication, Binary Division, Octal Number System, Decimal To Octal, Octal To Decimal, Octal to Binary and Vice Verssa, and other topics.
Octal Arithmetic, Hexadecimal Number System and Weighted Codes
4. Octal Arithmetic, Hexadecimal Number System and Weighted Codes
In this 41 mins Video Lesson
Non Weighted Codes
5. Non Weighted Codes
In this 21 mins Video Lesson
Non-Weighted Codes, Excess-3 Code, Gray Code, and other topics.

### Revision Notes

Introduction: Binary, Hexadecimal numbers, octal numbers and number conversion.

Signed Binary number representation: Signed Magnitude, 1’s complement and 2’s complement representation.

Binary, Octal, Hexadecimal Arithmetic: 2’s complement arithmetic.