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・ Signs
・ Signed and Sealed in Blood
・ Signed ballot
・ Signed by Katie Price
・ Signed differential mapping
・ Signed distance function
・ Signed Dutch
・ Signed French
・ Signed German
・ Signed graph
・ Signed Italian
・ Signed Japanese
・ Signed measure
・ Signed Nepali
・ Signed number representations
Signed overpunch
・ Signed parish roads in Louisiana
・ Signed Polish
・ Signed Sealed and Delivered
・ Signed sealed delivered
・ Signed Sealed Delivered (album)
・ Signed Spanish
・ Signed to the Streets
・ Signed to the Streets 2
・ Signed with Their Honour
・ Signed zero
・ Signed, Sealed & Delivered
・ Signed, Sealed, Delivered (TV series)
・ Signed, Sealed, Delivered I'm Yours
・ Signed-digit representation


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Signed overpunch : ウィキペディア英語版
Signed overpunch

A signed overpunch is a code used to store the sign of a number by changing the last digit. It is used in COBOL, especially when using EBCDIC. Its purpose is to save a character that would otherwise be used by the sign digit. The code is derived from the Hollerith Punched Card Code, where both a digit and a sign can be entered in the same card column.
==The codes==
|| 0 || −
|-
| J || 1 || −
|-
| K || 2 || −
|-
| L || 3 || −
|-
| M || 4 || −
|-
| N || 5 || −
|-
| O || 6 || −
|-
| P || 7 || −
|-
| Q || 8 || −
|-
| R || 9 || −
|-
|

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Signed overpunch」の詳細全文を読む



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