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Last updated:
29-01-09 |
Our natural number system based @
10 while computers bound to use 2 as base for their
calculations. A common task for a computer program will include
conversions between decimal inputs and the binary format.
Most conversions algorithm based
at division / modulus operations - but a "slightly modified"
shift-register could be very useful for binary to BCD and BCD to
binary conversions. (Read
more here)
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Decimal |
Binary |
Hexadecimal |
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0 |
0 0 0 0 |
0 |
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1 |
0 0 0 1 |
1 |
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2 |
0 0 1 0 |
2 |
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3 |
0 0 1 1 |
3 |
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4 |
0 1 0 0 |
4 |
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5 |
0 1 0 1 |
5 |
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6 |
0 1 1 0 |
6 |
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7 |
0 1 1 1 |
7 |
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8 |
1 0 0 0 |
8 |
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9 |
1 0 0 1 |
9 |
| 10 |
1 0 1 0 |
A |
| 11 |
1 0 1 1 |
B |
| 12 |
1 1 0 0 |
C |
| 13 |
1 1 0 1 |
D |
| 14 |
1 1 1 0 |
E |
| 15 |
1 1 1 1 |
F |
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Conversions
between binary and hexadecimal number systems easy - just group
the binary digits in groups of four.
The same is true for binary and
octal (radix 8) numbers - just group 3-bits together.
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Conversions
between decimal and octal number systems possible - divide the
decimal number with 8 until the number = 0
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Conversions
between the octal number system and "our decimal system" done by
multiplying each octal digit with the powers of 8n
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