# Third Chapter

## Third Chapter Lesson-5: Conversion of octal into hexadecimal and hexadecimal into octal number.

At the end of this lesson-1. You will be able to convert Octal to Hexadecimal Number system.  2. You will be able to convert Hexadecimal to Octal Number system. Conversion between Octal and Hexadecimal Number System    Lesson Evaluation- Knowledge Based Questions:Comprehension Based Questions:Creative Questions:Multiple Choice Questions: Written by,Mizanur Rahman (Mizan) Lecturer of ICT, Shaheed Bir Uttam Lt. Anwar Girls’ College , Dhaka Cantonment  Author at www.edupointbd.com Software Engineer at m...

## Third Chapter Lesson-4: Conversion of octal & hexadecimal into binary and binary into octal & hexadecimal number.

At the end of this lesson-1. You will be able to convert Octal & Hexadecimal to Binary Number system.  2. You will be able to convert Binary to Octal & Hexadecimal Number system.  Conversion among Octal, Hexadecimal and Binary Number System A given number in base x can be converted to any other base y using the following steps-Step-01: Convert the number from any base to base 10.Step-02: Convert the number from base 10 to any base.    Lesson Evaluation- Knowledge Based Questions:Comprehension Based Questions:Creative Ques...

## Third Chapter Lesson-3: Conversion of binary, octal and hexadecimal number into decimal number.

At the end of this lesson-1. You will be able to convert a binary number into decimal number. 2. You will be able to convert a octal number into decimal number. 3. You will be able to convert a hexadecimal number into decimal number. Other Base to Decimal Number SystemGeneral theorem for converting any number into decimal number:  Decimal number = ∑ digit × (base of given number)position number of digit Steps to solve the problem:Assign position number to each digit of the given number. Digits to the left of decimal are numbered starting from 0. Digit...

## Third Chapter Lesson-1: Concept of Number System.

At the end of this lesson-1. You will be able to describe the history of creating number. 2. You will be able to distinguish number and digit.  3. You will be able to describe the types of number system.    4. You will be able to differentiate different types of number systems.   A digit is a single numerical symbol, from 0 to 9. A number is a string of one or more digits. For example, 7 is both a digit and a number. In fact, it’s a one-digit number. However, 15 is a string of two digits, so it’s a number — a two-digit number. And 426 is a three-digit number.The v...