Bruger:Peh-herlev/sandkasse-Talrepresentation (Computer): Forskelle mellem versioner

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Linje 14:
 
== decimaltal repræsentation ==
{|
| 1024 || 512 ||256 ||128 ||64 ||32 ||16 ||8 ||4 ||2 ||1
|-
| 1 ||1 ||1 ||1 ||1 ||0 ||0 ||1 ||0 ||1 ||0
|}
 
{| border="1" cellspacing="0"
! colspan="16" | 16 bit computer ord
|-
! align="center" | 15
! align="center" | 14
! align="center" | 13
! align="center" | 12
! align="center" | 11
! align="center" | 10
! align="center" | 9
! align="center" | 8
! align="center" | 7
! align="center" | 6
! align="center" | 5
! align="center" | 4
! align="center" | 3
! align="center" | 2
! align="center" | 1
! align="center" | 0
|-
| align="center" | 0
| align="center" | 0
| align="center" | 0
| align="center" | 0
| align="center" | 0
| align="center" | 0
| align="center" | 0
| align="center" | 0
| align="center" | 0
| align="center" | 0
| align="center" | 0
| align="center" | 0
| align="center" | 0
| align="center" | 0
| align="center" | 0
| align="center" | 0
|}
 
==== 2 ====
 
{| border="0" cellspacing="0"
! byte nummer
! colspan="8" align="center" bgcolor="lightgray" | 1.
! •
! colspan="8" align="center" bgcolor="lightgray" | 2.
! •
! colspan="8" align="center" bgcolor="lightgray" | 3.
|-
! align="left" | [[ASCII]]
! colspan="8" align="center" bgcolor="lightgray" | "1"
!
! colspan="8" align="center" bgcolor="lightgray" | "3"
!
! colspan="8" align="center" bgcolor="lightgray" | "7"
|-
! align="left" | Bit nummer
! align="center" bgcolor="lightgray" | 7
! align="center" bgcolor="lightgray" | 6
! align="center" bgcolor="lightgray" | 5
! align="center" bgcolor="lightgray" | 4
! align="center" bgcolor="lightgray" | 3
! align="center" bgcolor="lightgray" | 2
! align="center" bgcolor="lightgray" | 1
! align="center" bgcolor="lightgray" | 0
!
! align="center" bgcolor="lightgray" | 7
! align="center" bgcolor="lightgray" | 6
! align="center" bgcolor="lightgray" | 5
! align="center" bgcolor="lightgray" | 4
! align="center" bgcolor="lightgray" | 3
! align="center" bgcolor="lightgray" | 2
! align="center" bgcolor="lightgray" | 1
! align="center" bgcolor="lightgray" | 0
|
! align="center" bgcolor="lightgray" | 7
! align="center" bgcolor="lightgray" | 6
! align="center" bgcolor="lightgray" | 5
! align="center" bgcolor="lightgray" | 4
! align="center" bgcolor="lightgray" | 3
! align="center" bgcolor="lightgray" | 2
! align="center" bgcolor="lightgray" | 1
! align="center" bgcolor="lightgray" | 0
|-
! align="left" | Bit værdi
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 1
| align="center" bgcolor="gray" | 1
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 1
|
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 1
| align="center" bgcolor="gray" | 1
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 1
| align="center" bgcolor="gray" | 1
|
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 1
| align="center" bgcolor="gray" | 1
| align="center" bgcolor="gray" | 1
|}
 
 
 
 
=== Fast komma decimaltal ===
Line 19 ⟶ 139:
=== Flydende komma decimaltal ===
Også kendt som '''floating point'''.
 
 
{| border="0" cellspacing="0"
!
! colspan="35" align="center" bgcolor="lightgray" | Computer ord (32 bit)
|-
! align="left" | Funktion:
! align="center" bgcolor="lightgray" | Eksponent<br/>fortegn
!
! colspan="8" align="center" bgcolor="lightgray" | Eksponen
!
! align="center" bgcolor="lightgray" | Fortegn
!
! colspan="23" align="center" bgcolor="lightgray" | Mantisse
|-
! align="left" | Bit nummer
! align="center" bgcolor="lightgray" | 31
!
! align="center" bgcolor="lightgray" | 30
! align="center" bgcolor="lightgray" | 29
! align="center" bgcolor="lightgray" | 28
! align="center" bgcolor="lightgray" | 27
! align="center" bgcolor="lightgray" | 26
! align="center" bgcolor="lightgray" | 25
! align="center" bgcolor="lightgray" | 24
! align="center" bgcolor="lightgray" | 23
!
! align="center" bgcolor="lightgray" | 22
!
! align="center" bgcolor="lightgray" | 21
! align="center" bgcolor="lightgray" | 20
! align="center" bgcolor="lightgray" | 19
! align="center" bgcolor="lightgray" | 18
! align="center" bgcolor="lightgray" | 17
! align="center" bgcolor="lightgray" | 16
! align="center" bgcolor="lightgray" | 15
! align="center" bgcolor="lightgray" | 14
! align="center" bgcolor="lightgray" | 13
! align="center" bgcolor="lightgray" | 12
! align="center" bgcolor="lightgray" | 11
! align="center" bgcolor="lightgray" | 10
! align="center" bgcolor="lightgray" | 9
! align="center" bgcolor="lightgray" | 8
! align="center" bgcolor="lightgray" | 7
! align="center" bgcolor="lightgray" | 6
! align="center" bgcolor="lightgray" | 5
! align="center" bgcolor="lightgray" | 4
! align="center" bgcolor="lightgray" | 3
! align="center" bgcolor="lightgray" | 2
! align="center" bgcolor="lightgray" | 1
! align="center" bgcolor="lightgray" | 0
|-
! align="left" | Bit værdi
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" |
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 1
| align="center" bgcolor="gray" | 1
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 1
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" |
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" |
| align="center" bgcolor="gray" | 1
| align="center" bgcolor="gray" | 1
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 1
| align="center" bgcolor="gray" | 1
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 1
| align="center" bgcolor="gray" | 1
| align="center" bgcolor="gray" | 1
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 0
| align="center" bgcolor="gray" | 1
| align="center" bgcolor="gray" | 1
| align="center" bgcolor="gray" | 1
|}
 
 
 
== Se også ==
 
**[[Binære talsystem]]
**[[DecimalBinære talsystem]]
**[[HeltalDecimal]]
*[[Heltal]]
 
== tmp link ==
 
* Eng : [[http://en.wikipedia.org/wiki/Quantization_%28signal_processing%29 Quantization (signal processing)]]
* Eng : [[http://en.wikipedia.org/wiki/Integer_%28computer_science%29 Integer (computer science)]]
* Eng : [[http://en.wikipedia.org/wiki/Binary-coded_decimal Binary-coded decimal]]
* Eng : [[http://en.wikipedia.org/wiki/Floating_point Floating point]]
* Eng : [[http://en.wikipedia.org/wiki/Real_number Real number]]