Bits, Bytes, KiloBytes, MegaBytes, GigaBytes - PowerPoint PPT Presentation

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Bits, Bytes, KiloBytes, MegaBytes, GigaBytes

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Bits, Bytes, KiloBytes, MegaBytes, GigaBytes & TeraBytes. Bit. 0 or 1. Byte. Equivalent to 8 bits. KiloByte. 2 10 Bytes (approx. a thousand) K - Thousand 103. MegaByte ... – PowerPoint PPT presentation

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Title: Bits, Bytes, KiloBytes, MegaBytes, GigaBytes


1
Bits, Bytes, KiloBytes, MegaBytes, GigaBytes
TeraBytes.
2
Bit
  • 0 or 1

3
Byte
  • Equivalent to 8 bits

4
KiloByte
  • 2 10 Bytes (approx. a thousand)
  • K - Thousand 103

5
MegaByte
  • 2 20 Bytes (approx. a million)
  • M - Million 106

6
GigaByte
  • 2 30 Bytes (approx. a billion)
  • G - Billion 109

7
TeraByte
  • 2 40 Bytes (approx. a trillion)
  • T - Trillion 1012

8
Decimal (compare to binary)
  • 451 410 2 510 1 110 0
  • 4037 410 3 010 2 310 1 710 0
  • 52305 510 4 210 3 310 2 010 1 510
    0

9
Binary
  • 10011 124 023022121120
  • 16 0 0 2 1
  • 19 (in base 10)
  • 101101 125 024 123122021120
  • 32 0 8 4 0 1
  • 45 (in base 10)
  • 1101 ?

10
One character is represented using one byte (8
bits)
11
ASCII
  • American Standard Code for Information
    Interchange
  • The ASCII character code for the letter A is
  • 65 0100 0001
  • The ASCII character code for the letter B is
  • 66 0100 0010
  • etc.

12
ASCII (continued)
  • The ASCII character code for a space (pressing
    the space bar) is
  • 32 0010 0000
  • The ASCII character code for the letter a is
  • 97 0110 0001
  • The ASCII character code for the letter b is
  • 98 0110 0010
  • etc.

13
Base 16
  • Base two - digits run from 0 to 1
  • Base ten - digits run from 0 to 9
  • Base sixteen - digits run from 0 to 15
  • The digits are
  • 0 1 2 3 4 5 6 7 8 9 A B C D E F

14
Hexadecimal to Decimal
  • 8 D 816 1 D16 0
  • 816 1 1316 0 141
  • D 8 D16 1 816 0
  • 1316 1 816 0 216
  • 3 E 316 1 E16 0
  • 316 1 1416 0 62

15
Decimal to Hexadecimal
125 in base 16 is
7D
167 112 and 125-112 13.
Therefore, there is a remainder of 13 (or D).
16
Decimal to Hexadecimal
191 in base 16 is
BF
1611 176 and 191-176 15.
Therefore, there is a remainder of 15 (or F).
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