What are the differences between bit, byte, megabyes, gigabytes, and so on

These terms talk about size of data on hard drives, CD-ROMs, Floppies and other media.

Space		amount
1 bit	-	Binary Digit
8 bits	-	1 Byte
1024 Bytes	-	1 Kilobyte
1024 Kilobytes	-	1 Megabyte
1024 Megabytes	-	1 Gigabyte
1024 Gigabytes	-	1 Terabyte
1024 Terabyte	-	1 Petabyte
1024 Petabyte	-	1 Exabyte
1024 Exabyte	-	1 Zettabyte
1024 Zettabyte	-	1 Yottabyte
1024 Yottabyte	-	1 Brontobyte
1024 Brontobyte	-	1 Geopbyte

These sizes are not exact.

Some Examples of sizes

Floppy 3 1/2 disk - holds 1.4 megabytes of data
CDR and CDRW - holds roughly 650 megabytes of data
DVD+R, DVD-R, DVD+RW, DVD-RW - holds 4.5 gigabytes of data
DVD+/-RW (Dual layer) - Holds 8 gigabytes of data

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