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Science Forum Index » Mathematics Forum » Hexadecimal leads to insight.
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| Thinkit |
 Posted: Mon Dec 22, 2003 10:59 pm |
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Sure, math has little to do with actual numbers. But sometimes you
need to look at literals to look for patterns. Even when you're
result is radix neutral, the elegance of hexadecimal will set your
brain in a mode of logic and intelligence. Unless you're examining
bowling scores, use hexadecimal. |
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| Steven |
| Posted: Wed Dec 24, 2003 8:31 am |
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"Thinkit" <greg_finch2@hotmail.com> wrote in message
news:2db4f40b.0312221959.26b3bb92@posting.google.com...
Quote: Sure, math has little to do with actual numbers
Pardon? |
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| Shmuel (Seymour J.) Metz |
| Posted: Thu Dec 25, 2003 11:42 pm |
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In <2db4f40b.0312221959.26b3bb92@posting.google.com>, on 12/22/2003
at 07:59 PM, greg_finch2@hotmail.com (Thinkit) said:
Quote: elegance of hexadecimal
How is hexadecimal any more elegant than any other base?
Quote: Unless you're examining bowling scores, use hexadecimal.
Real programmers use octal. All of our units of measurement are scaled
in decimal. Headecimal is only reasonable for equipment that deals
with numbers in bytes that are multiples of 4 bits.
--
Shmuel (Seymour J.) Metz, SysProg and JOAT
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| Mensanator |
| Posted: Fri Dec 26, 2003 12:54 am |
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Quote: Subject: Re: Hexadecimal leads to insight.
From: "Shmuel (Seymour J.) Metz" spamtrap@library.lspace.org.invalid
Date: 12/25/2003 10:42 PM Central Standard Time
Message-id: <3febbc35$8$fuzhry+tra$mr2ice@news.patriot.net
In <2db4f40b.0312221959.26b3bb92@posting.google.com>, on 12/22/2003
at 07:59 PM, greg_finch2@hotmail.com (Thinkit) said:
elegance of hexadecimal
How is hexadecimal any more elegant than any other base?
Unless you're examining bowling scores, use hexadecimal.
Real programmers use octal. All of our units of measurement are scaled
in decimal. Headecimal is only reasonable for equipment that deals
with numbers in bytes that are multiples of 4 bits.
Which explains why DEC used octal for 16-bit registers and 20-bit addressing?
Quote:
--
Shmuel (Seymour J.) Metz, SysProg and JOAT
Unsolicited bulk E-mail will be subject to legal action. I reserve
the right to publicly post or ridicule any abusive E-mail.
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--
Mensanator
Ace of Clubs |
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| Timothy Murphy |
| Posted: Fri Dec 26, 2003 10:36 am |
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Shmuel (Seymour J.) Metz wrote:
Quote: Real programmers use octal. All of our units of measurement are scaled
in decimal. Headecimal is only reasonable for equipment that deals
with numbers in bytes that are multiples of 4 bits.
Isn't that all equipment?
--
Timothy Murphy
e-mail (<80k only): tim /at/ birdsnest.maths.tcd.ie
tel: +353-86-2336090, +353-1-2842366
s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland |
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| Shmuel (Seymour J.) Metz |
| Posted: Sat Dec 27, 2003 5:52 pm |
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In <20031226005435.14277.00001826@mb-m28.aol.com>, on 12/26/2003
at 05:54 AM, mensanator@aol.compost (Mensanator) said:
Quote: Which explains why DEC used octal for 16-bit registers and 20-bit
addressing?
When did I ever say that everything DEC did with the PDP-11 was
reasonable? For that matter, when did I ever say that anything DEC did
with the PDP-11 was reasonable?
More to the point, "A implies B" is not equivalent to "B implies A".
--
Shmuel (Seymour J.) Metz, SysProg and JOAT
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| Shmuel (Seymour J.) Metz |
| Posted: Sat Dec 27, 2003 5:54 pm |
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In <vzYGb.2175$HR.5464@news.indigo.ie>, on 12/26/2003
at 03:36 PM, Timothy Murphy <tim@birdsnest.maths.tcd.ie> said:
Quote: Isn't that all equipment?
Only if 18 is a multiple of 4.
--
Shmuel (Seymour J.) Metz, SysProg and JOAT
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the right to publicly post or ridicule any abusive E-mail.
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| Mensanator |
| Posted: Sat Dec 27, 2003 8:17 pm |
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Quote: Subject: Re: Hexadecimal leads to insight.
From: "Shmuel (Seymour J.) Metz" spamtrap@library.lspace.org.invalid
Date: 12/27/2003 4:52 PM Central Standard Time
Message-id: <3fee0d35$13$fuzhry+tra$mr2ice@news.patriot.net
In <20031226005435.14277.00001826@mb-m28.aol.com>, on 12/26/2003
at 05:54 AM, mensanator@aol.compost (Mensanator) said:
Which explains why DEC used octal for 16-bit registers and 20-bit
addressing?
When did I ever say that everything DEC did with the PDP-11 was
reasonable? For that matter, when did I ever say that anything DEC did
with the PDP-11 was reasonable?
When did I say it was unreasonable? My point apparently went completely over
your head. What you _did_ say was
<quote>
Headecimal is only reasonable for equipment that deals
with numbers in bytes that are multiples of 4 bits.
</quote>
It would be unreasonable for the PDP-11 to use hex because the index register
designations are three bits, thus making the machine language more easily
interpreted when the dump is in octal. If the PDP-11 had 16 registers instead
of 8, then it would be reasonable to use hex. Note that this has nothing to do
with word size or addressing.
Of course, a real programmer would understand that.
Quote:
More to the point, "A implies B" is not equivalent to "B implies A".
--
Mensanator
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| Shmuel (Seymour J.) Metz |
| Posted: Sun Dec 28, 2003 7:04 pm |
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In <20031227201711.11386.00001753@mb-m11.aol.com>, on 12/28/2003
at 01:17 AM, mensanator@aol.compost (Mensanator) said:
Quote: My point apparently went completely over your head.
No, your "point" was simply irrelevant.
Quote: What you _did_ say was
I kinow what I wrote, TYVM. You apparently failed to understand what I
wrote, despite having quoted it.
Quote: quote
Headecimal is only reasonable for equipment that deals
with numbers in bytes that are multiples of 4 bits.
/quote
K3wl. No read it very carefully and note what I did *NOT* write in it.
Quote: It would be unreasonable for the PDP-11 to use hex
Whether that is true or not, it has nothing to do with what I wrote.
Quote: thus making the machine language more easily
interpreted when the dump is in octal.
Only for people whose ability to do mental arithmetic is impaired.
Quote: Note that this has nothing to do with word size or addressing.
I note your belief to that effect.
Quote: Of course, a real programmer would understand that.
ROTF,LMAO! There is a difference between understanding why somebody
did something stupid and pretending that it wasn't stupid. The fact
that I don't agree with the decision doesn't mean that I didn't
understand it before you were born.
I repeat,
Quote: More to the point, "A implies B" is not equivalent to "B implies A".
You quoted it, but appear to have not read and understood it.
--
Shmuel (Seymour J.) Metz, SysProg and JOAT
Unsolicited bulk E-mail will be subject to legal action. I reserve
the right to publicly post or ridicule any abusive E-mail.
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| Don McDonald |
| Posted: Mon Dec 29, 2003 5:53 pm |
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greg_finch2@hotmail.com (Thinkit) wrote in message news:<2db4f40b.0312221959.26b3bb92@posting.google.com>...
Quote: Sure, math has little to do with actual numbers. But sometimes you
need to look at literals to look for patterns. Even when you're
result is radix neutral, the elegance of hexadecimal will set your
brain in a mode of logic and intelligence. Unless you're examining
bowling scores, use hexadecimal.
Re: Hexadecimal leads to insight. google 4e6 in hex (= 3d 0900.)
don.mcdonald
3 dimension phone calls.
30.12.03 |
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