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.dsy:it. : Powered by vBulletin version 2.3.1 .dsy:it. > Didattica > Corsi A - F > Architettura degli elaboratori e delle reti > numero esadecimale
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morte2097
.primate.

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numero esadecimale

ciao scusate la banalità della mia domanda ma come si rappresenta un numero esadecimale negativo per esempio -99?

10-04-2007 17:25
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Skilotto83
..Energia positiva...

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traformi 99 in binario, calcoli -99 binario in complemento a 2 e da li' calcoli l'esadecimale..
;)

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10-04-2007 19:24
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morte2097
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grazie per i numeri con la virgola? stesso procedimento da binario a esadecimale?

11-04-2007 14:40
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khelidan
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no,devi usare lo standard ieee 754 per i numeri floating point,e quindi hai un bit dedicato al segno

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Khelidan

12-04-2007 13:55
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davene
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mi permetto di correggere questo post...
per i numeri decimali devi usare la moltiplicazione per 2 successiva..
lo standard IEEE754 è appunto...uno standard per la RAPPRESENTAZIONE dei numeri floating point nel calcolatori...non è la conversione dec2bin di un numero in decimale!
Saluti

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Saluti - Davide

04-05-2007 10:17
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amar7
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hai ragione davene, se qualcuno sbaglia, meglio correggerlo senno sbagliamo tutti

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amar7

26-04-2009 23:36
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