## [NTB] EBCDIC

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• Can someone please tell me what this is, EBCDIC and please in a language I might be able to understand, like with a lot of goo goo s and ga ga s. Dennis ...
Message 1 of 3 , Mar 26, 1999
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Can someone please tell me what this is, EBCDIC and please in a language I
might be able to understand, like with a lot of goo goo's and ga ga's.<G>

Dennis

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• ... Well, I ll embarrass myself. Without looking it up, I think the correct meaning is Extended Binary Coded Decimal Interchange Code (or something like
Message 2 of 3 , Mar 26, 1999
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On Fri, 26 Mar 1999 17:31:03 -0600, you wrote:

>Can someone please tell me what this is, EBCDIC and please in a language I
>might be able to understand, like with a lot of goo goo's and ga ga's.<G>
>
Well, I'll embarrass myself. Without looking it up, I think the
correct meaning is Extended Binary Coded Decimal Interchange Code
(or something like that). It came about when computers grew from
less bits per character to 8 (hexadecimal) to Extend the bit
combinations to allow 4 times as many characters/symbols.

I started when characters were only 6 bits which was called Octal
because each 3 bits could count from 0 to 7 (8 combinations). It
took 2 Octal digits to make a character/symbol. But, there just
wasn't enough combinations (only 64), so they went to 2
Hexadecimal digits which allowed 256 combinations.

RCA (where I first worked with computers) tried introducing
decimal machines (bi-quinary) where the least significant 3 bit
digit (the one on the right) only counted from 0-4 and the most
significant 1 bit digit went from 0-1 thus giving you ten
combinations, but it meant throwing away perfectly good bit
combinations.

Anyway, now we count from 0-F with two 4 bit hexadecimal digits
and the codes/characters are called EBCDIC which has been
accepted for a few generations as perfectly logical and normal.

Clear? There will be a test in the morning.......Ron
--

"A society that will trade a little liberty for a little order will lose
both, and deserve neither." - Thomas Jefferson

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• HI Ron, ... .........I am leaving on the train tonight so I will not be available for any test.:-)))) Thanks very much! Dennis ... eGroup home:
Message 3 of 3 , Mar 26, 1999
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HI Ron,

On 27 Mar 99, 1:06 Ron Cadby wrote:

> Anyway, now we count from 0-F with two 4 bit hexadecimal digits
> and the codes/characters are called EBCDIC which has been
> accepted for a few generations as perfectly logical and normal.
>
> Clear? There will be a test in the morning.......Ron

<LOL>.........I am leaving on the train tonight so I will not be available
for any test.:-))))

Thanks very much!

Dennis

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