Re: A83: LSB, MSB.

To: assembly-83@lists.ticalc.org
Subject: Re: A83: LSB, MSB.
From: Olle Hedman <oh@hem.passagen.se>
Date: Fri, 14 Jun 1996 15:20:09 +0100
Delivered-To: assembly-83-outgoing@towerguard.unix.edu.sollentuna.se
In-Reply-To: <199806141140.UAA04822@tkb.att.ne.jp>
Reply-To: assembly-83@lists.ticalc.org

At 19:44 1998-06-14 +0900, you wrote:
>
>What are LSB and MSB...I know its Least-significant byte, and its the last
>4 bits of a byte, and MSB is most-...., and its the first 4....but what's
>the use of them? Is it just a term?
>

MSB is the most significant _bit_ and is the first bit..  
and LSB is then the least significant bit..

and it is just a term.. 

what you talk about is the least and most significant nibble.. (nibble = 4
bits or half-a-byte)

the name comes from the fact that the most significant bit is.. just like
the name says, most significant.. that is, has the highest value, the value
of it is 2^7  and the least significant is..  least significant.. :)  has
the lowest value. (2^0 or 1)

in a word (16 bits) the MSB is bit 15 and the LSB still bit 0..  and in a
dubble word MSB is bit 31 and so on..

and it is easier and nicer and so on to say MSB instead of "bit number 7" :)

is that enough for an explanation?

//Olle

References:

A83: LSB, MSB.

From: "James Matthews" <matthews@tkb.att.ne.jp>

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