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There are 2 answers to this.

Hard-disk manufacturers say 1 Megabyte is 1.000.000 bytes sharp.

Memory-manufacturers calculate this different as all memorychips are multiples of 8 bits.

The Binary numbersystem is used and the closest binary number that fills all bits is:

11111111111111111111

The decimal representation of this is 1.048.575 bytes. IE One megabyte.

When counting data we use decimal numbersystem.

When counting memory we use Binary numbersystem.

This is not likely to ever change because of the way computers and memorychips work.

Regards.

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15y ago

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