Re: what is Hex?

  • From: Alex Hall <mehgcap@xxxxxxx>
  • To: programmingblind@xxxxxxxxxxxxx
  • Date: Wed, 20 Feb 2008 20:13:57 -0500

I hate to ask, but what is the nibble of a byte?

Have a great day,
Alex

----- Original Message -----
From: "Dale Leavens" <dleavens@xxxxxxx
To: <programmingblind@xxxxxxxxxxxxx
Date sent: Wed, 20 Feb 2008 16:00:42 -0500
Subject: Re: what is Hex?

You use two octal numbers, one for the upper and one for the
lower nibble of
a byte. Frankly I have never really used octal notation for
anything
serious.  There may well be other uses.
----- Original Message -----
From: <yarringt@xxxxxxxxxxxxx
To: <programmingblind@xxxxxxxxxxxxx
Sent: Wednesday, February 20, 2008 1:37 PM
Subject: Re: what is Hex?


I'm confused. I get using a hex number to represent the upper
and lower
nibble of a byte, but how could you
use an octal number to represent the upper and lower nibble, or
a 4-bit
register value? -Debbie

Dale Leavens wrote:
Close,

Hex (hexadecimal) is base 16 and it is used because of the
architecture
of computers where a byte is made up of 8 bits. Rather than
represent the
position of 1s and 0s as an 8 bit binary number you can
represent the
contents of the byte with a Hexadecimal number. Octal (base 8)
was and is
sometimes also used to represent the upper or lower nibble of a
byte or
the value of a 4 bit register.

Hope this informs.
.

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