Confused

This question isn't approopriate for the forum, but this seems a logical place for smart people to give a reply...


The Magic Number for computers seems to be 255.
FF converted to dec is 255
0-F to Dec is 16
Array (O-F):
0 1 . F
1
.
F

thats a 16 by 16 grid.
16 * 16 = 256
RAM Comes in 256 increments

Where does the extra 1 from FF to 256 come in???

Moved to General Developer

There are 256 numbers between 0 and 255. If you use an 8 bit byte, with all bits turned off 0000 0000, the value is 0, but if you turn on all the bits 1111 1111, the value is 256 (or 2^8). (2^16 = 65536, or 64K)

Quote:

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Originally Posted by dglienna

There are 256 numbers between 0 and 255. If you use an 8 bit byte, with all bits turned off 0000 0000, the value is 0, but if you turn on all the bits 1111 1111, the value is 256 (or 2^8). (2^16 = 65536, or 64K)

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Last I heard, 1111 1111 has the value 255, not 256. Otherwise that's about it.

dg got a little carried away with that explanation :D

You could just say, the short answer is you have to count zero. In your 2D array, you have to count 0,0. The number of positions range from 00 to FF. FF is 255, which is the 256th possible combination.

Bill

Thanks

Oops. Using CALC. Forgot to subtract 1 from both exponential calcs. Logic over-ridden :)