1. Information Technology Introduction to Number System
Adnan Khalid

2. Computer and Numbers To a computer everything is a number.
Numbers are numbers.
Alphabets are numbers.
Pictures are numbers.

3. The Binary Number System
In digital computers only two values are displayed i.e. either On or Off.
These values can also be represented by 0’s and 1’s.
George Boole invented Boolean Algebra which stated that every equation can either be true or false.

4. The Unconventional System
The common man uses a base10 or decimal system.
The binary system is hence a bit complicated to comprehend.
The decimal system contains digits 0-9 and then repetition of these digits while binary has only 0 and 1 and then repetition of these two.

5. Bits and Bytes A byte consists of 8 bits.
A kilobyte consists of 1024 bytes.
The presence of a bit represents the presence of data.

6. Decimal Vs Binary

7. Binary Conversion to Decimal
Binary To Decimal Conversion
                                                             
Binary Conversion to Decimal

8. Decimal Conversion to Binary
To convert a decimal number to binary, first subtract the largest possible power of two, and keep subtracting the next largest possible power form the remainder, marking 1s in each column where this is possible and 0s where it is not.
Example 1 - (Convert Decimal 44 to Binary)

9.                                                        
                                                      
Binary Addition
Example 1
Example 2

10. Binary Multiplication