1. COMPUTER FUNDAMENTALS David Samuel bhatti David.bhatti@seecs.edu.pk

2. Learning Objectives  Number System  Binary Number System  Octal Number System  Decimal Number System  Hexadecimal Number System

3. Number System  Used to represent data or information

4. Binary Number System  Binary Number System={0,1}  E.g (1011) 2 BinaryDecimal 00000 00011 00102 00113 01004 01015 01106 01117 10008 10019 101010 101111 110012 110113 111014 111115 (10011) 2 = (19) 10 (110101) 2 = (53) 10 (10001011) 2 = (139) 10

5. Octal Number System  Octal Number System={0,1,2,3,4,5,6,7}  E.g (1111) 7

6. Decimal Number System  Decimal Number System={0,1,2,3,4,5,6,7,8,9}  E.g (1111) 10

7. Hexadecimal Number System  Hexadecimal Number System={0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F} A=10 B=11 C=12 D=13 E=14 F=15  E.g (2A) 16

8. Decimal to Binary

9. Binary to Decimal binary number:11100 power of 2:2525 2424 23232 2121 111001 2 = 1·2 5 +1·2 4 +1·2 3 +0·2 2 +0·2 1 +1·2 0 = 57

10. Decimal to Octal

11. Octal to Decimal

12. Decimal to Hexadecimal

13. Hexadecimal to Decimal

14. Quiz  What is a computer? List operation of Computer.  Match Column  (1111) 2 convert to Base 10  What is AI? TechnologyGeneration Vacuum Tube4 th Generation Transistor2 nd Generation IC1 st Generation Microprocessor3 rd Generation

15. Key Terms  Bit  Byte  Number System  Binary Number System  Octal Number System  Decimal Number System  Binary Number System  Hexadecimal Number System