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Number Sysytems

Number Sysytems. D. W. Chathurika Pavithrani Uva Wellassa University. Number Systems. 724.5 = 7* 10 2 + 2*10 1 + 4*10 0 +5* 10 -1. Numbers Systems used in Computer Work. Decimal Binary Octal Hexadecimal. Binary. (11010) 2 = 1*2 4 + 1*2 3 +0*2 2 + 1*2 1 + 0*2 20 = (26) 10.

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Number Sysytems

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  1. Number Sysytems D. W. ChathurikaPavithrani UvaWellassa University

  2. Number Systems • 724.5 = 7* 102 + 2*101 + 4*100 +5* 10-1

  3. Numbers Systems used in Computer Work • Decimal • Binary • Octal • Hexadecimal

  4. Binary • (11010)2 = 1*24 + 1*23 +0*22 + 1*21 + 0*220= (26) 10

  5. Octal • (127.4)8 = 1*82 + 2*81 + 7*80 + 4*8-1= (87.5)10

  6. Hexadecimal • First 10 digits from the decimal system • And the letters • A – 10 • B – 11 • C – 12 • D – 13 • E – 14 • F - 15

  7. Hexadecimal • (B65F)16 = 11*163 + 6*162 + 5*161 + 15*160 = (46687)10

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