[Groop] Re: I'm sure we have done this before, but ...

[John T]

Whaaaaaaaaaaaaaaaaaaaaaaaa.............................................?

----- Original Message ----- 
From: "E C" <mightyhero at go.com>
To: <groop at groo.com>
Sent: Saturday, February 07, 2004 1:08 AM
Subject: [Groop] Re: I'm sure we have done this before, but ...


> Hi guys/grrls!
> 
> A decimal system has ten numbers (0, 1, 2, 3, 4, 5,
> 6, 7, 8, and 9).
> 
> A binary system has two numbers (0 and 1).
> 
> A decimal system is based on the number 10.  For
> example:
> 
>      1234 = 1x1000 + 2x100 + 3x10 + 4x1
>      where 1000 is 10 to the 3rd power (10x10x10)
>            100  is 10 to the 2nd power (10x10)
>            10   is 10 to the 1st power (10)
>            1    is 10 to the 0th power (1)
>  
> A binary system is based on the number 2.  For
> example:
> 
>      1010 in binary = 1x8 + 0x4 + 1x2 + 0x1 in decimal
>      where 8 is 2 to the 3rd power (2x2x2)
>            4 is 2 to the 2nd power (2x2)
>            2 is 2 to the 1st power (2)
>            1 is 2 to the 0th power (1)
> 
>      0111 in binary = 0x8 + 1x4 + 1x2 + 1x1 in decimal
> 
> There is also binary logic (used in digital logic in
> computers).  It's sometimes called Boolean logic, named
> after George Boole.
> 
> A "+" means logical "OR".
> 
>      0 + 0 = (0 or 0) = 0
>      0 + 1 = (0 or 1) = 1
>      1 + 0 = (1 or 0) = 1
>      1 + 1 = (1 or 1) = 1
> 
> A "." means logical "AND".
> 
>      0 . 0 = (0 and 0) = 0
>      0 . 1 = (0 and 1) = 0
>      1 . 0 = (1 and 0) = 0
>      1 . 1 = (1 and 1) = 1
> 
> You can also use "1" and "0" to mean "true" or
> "false".  "1" means "true".  "0" means "false".
> 
> Sooo,
> 
>      "There are only 10 types of programmers,
>      those who know binary and those who don't."
> 
> In this sentence "10" doesn't mean "ten".  It's
> supposed to mean a "1" and a "0" (binary).  It
> also references "true" and "false".  Either
> "you know binary" (similar to a "true") or
> "you don't know binary" (similar to a "false").
> 
> See you.
> 
> Eric
> 
> 
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