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2's complement number Posted by indianj on 18 Sept 2005 at 9:26 PM

hello, does anyone know how to find the decimal equivalent of the four-bit two's complement number: 1000

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Re: 2's complement number Posted by shaolin007 on 20 Sept 2005 at 6:12 AM

: hello, does anyone know how to find the decimal equivalent of the four-bit two's complement number: 1000
:

1000= 8

~8

0111= ~8
+
0001
----
1000= -8

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Re: 2's complement number Posted by indianj on 20 Sept 2005 at 9:36 AM

i understand 2's complement, but i do not understand how did you get 8?

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Re: 2's complement number Posted by shaolin007 on 20 Sept 2005 at 9:53 AM

: i understand 2's complement, but i do not understand how did you get 8?
:

8 4 2 1
1 0 0 0

Largest negative number for 4 bits is -8 while the biggest positive is 7.

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Re: 2's complement number Posted by indianj on 20 Sept 2005 at 9:57 PM

finally, i get it. thanks for your help

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