1. Number Systems.

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Presentation transcript:

1. Number Systems

Common Number Systems System Base Symbols Used by humans? Used in computers? Binary 2 0, 1 No Yes Octal 8 0, 1, 2, 3, 4, 5, 6, 7 No/Yes Decimal 10 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 Hexa- decimal 16 A, B, C, D, E, F

Quantities/Counting (1 of 3) Decimal Binary Octal Hexa- decimal 1 2 10 3 11 4 100 5 101 6 110 7 111

Quantities/Counting (2 of 3) Decimal Binary Octal Hexa- decimal 8 1000 10 9 1001 11 1010 12 A 1011 13 B 1100 14 C 1101 15 D 1110 16 E 1111 17 F

Quantities/Counting (3 of 3) Decimal Binary Octal Hexa- decimal 16 10000 20 10 17 10001 21 11 18 10010 22 12 19 10011 23 13 10100 24 14 10101 25 15 10110 26 10111 27 Etc.

Decimal to Binary Decimal Octal Binary Hexadecimal

Decimal to Binary কৌশল / Technique সংখ্যাটিকে 2 দ্বারা ক্রমাগত ভাগ করতে হবে এবং ভাগশেষকে ধারাবাহিকভাবে সংরক্ষণ করতে হবে। (Divide by two, keep track of the remainder) প্রথম ভাগশেষটি হচ্ছে LSB (LSB, least-significant bit) এভাবে যতক্ষণ পর্যন্ত ভাগশেষ শুন্য না হয় ততক্ষণ ভাগ করতে হবে। সর্বশেষ ভাগশেষটি হচ্ছে MSB (MSB, most-significant bit) Etc.

Example 2 125 62 1 12510 = ?2 2 31 0 2 15 1 2 7 1 2 3 1 2 1 1 2 0 1 12510 = 11111012

অনুশীলন 1101 11001 1001010 1011111 1111011 1011010101 Decimal Binary 13 25 74 95 123 725 1101 11001 1001010 1011111 1111011 1011010101

Thank you