Nta Net Exam Dec 2018 l ICT Notes -Binary to Decimal Conversion
Binary Number System
A Binary number system has only two digits that are 0 and 1. Every number (value) represents with 0 and 1 in this number system. The base of binary number system is 2, because it has only two digits.
Octal number system
Octal number system has only eight (8) digits from 0 to 7. Every number (value) represents with 0,1,2,3,4,5,6 and 7 in this number system. The base of octal number system is 8, because it has only 8 digits.
Decimal number system
Decimal number system has only ten (10) digits from 0 to 9. Every number (value) represents with 0,1,2,3,4,5,6, 7,8 and 9 in this number system. The base of decimal number system is 10, because it has only 10 digits.
Hexadecimal number system
A Hexadecimal number system has sixteen (16) alphanumeric values from 0 to 9and A to F. Every number (value) represents with 0,1,2,3,4,5,6, 7, 8,9,A,B,C,D,E and F in this number system. The base of hexadecimal number system is 16, because it has 16 alphanumeric values. Here A is 10, B is 11, C is 12, D is 13, E is 14 and F is 15.
Number system | Base | Used digits |
Binary | 2 | 0,1 |
Octal | 8 | 0,1,2,3,4,5,6,7 |
Decimal | 10 | 0,1,2,3,4,5,6,7,8,9 |
Hexadecimal | 16 | 0,1,2,3,4,5,6,7,8,9, A,B,C,D,E,F |
Nta Net Exam Dec 2018 l ICT Notes -Binary to Decimal Number System Conversions
Question 1. Convert Binary Number (1 101)2 To ( ??)10 decimal Number
Ans = (1 101)2 = ( 13)10
Question 2. Convert Octal Number (1121)8 To ( ??)10 decimal Number
Ans – (1121)8 = (593)10
Question 3. Convert Hexadecimal AC9 To decimal Number
Ans – (AC9)16 = (2761)10
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