I often get asked what is a megabyte, etc…
So I added a link to the right called measurements that will take you to a nice list of a whole bunch of computer related measurments.
http://www.wu.ece.ufl.edu/links/dataRate/DataMeasurementChart.html
see also….http://en.wikipedia.org/wiki/Units_of_information
How do they relate?
- 1 bit – answer to an yes/no question
- 1 byte – a number from 0 to 255.
- 90 bytes: enough to store a typical line of text from a book.
- 512 bytes = ½ KiB: the typical sector of a hard disk.
- 1024 bytes = 1 KiB: the classical block size in UNIX filesystems.
- 2048 bytes = 2 KiB: a CD-ROM sector.
- 4096 bytes = 4 KiB: a memory page in x86 (since Intel 80386).
- 4 kB: about one page of text from a novel.
- 120 kB: the text of a typical pocket book.
- 1 MB – a 1024×1024 pixel bitmap image with 256 colors (8 bpp color depth).
- 3 MB – a three minute song (128k bitrate)
- 650-900 MB – an CD-ROM
- 1 GB – 114 minutes of uncompressed CD-quality audio at 1.4 Mbit/s
- 15 GB – number of bytes Google offers you for free.
- 8/16 GB – size of a normal flash drive
- 4 TB – The size of a $300 hard disk
- 966 EB – prediction of the volume of the whole internet in 2015
Steve Simpson, Glendale College Computer Instructor 