Thursday, January 5, 2012

Yes Size Matters - What are Bytes, KB’s, MB’s, GB’s, TB’s, PB’s or EB’s?

What do all these “measurements” mean that we see for both RAM (Random Access Memory) or the space on a hard drive, portable hard drive, flash drive or memory card/stick?
The smallest unit of memory storage is called a BIT. A bit either contains a ONE or a ZERO. That's it.
• Eight bits is one BYTE ("bite"). That's enough storage for about one letter of the alphabet.
• 1,024 bytes is one KILOBYTE (KB) or about one page of text.
• 1,024 kilobytes is one MEGABYTE (MB) or about 1,000 pages of text (short novel).
• 1,024 megabytes is one GIGABYTE (GB) or about 1,000,000 pages of text (pickup truck filled with books).
• 1,024 gigabytes is one TERABYTE (TB) – and that is equal to about 50,000 trees made into paper and printed
Today, the most popular form of measurement that we hear about is Terabytes (TB) but on the horizon and in some publications we are already hearing about PETABYTES (PB) and EXABYTES (EB) - we've come a long way baby since the Commodore 64's....and we wonder where it will end..

To give you an idea of how much data a TB is or how much it can hold based on a document: It is said that The U.S. Library of Congress Web Capture team claims that "As of April 2011, the Library has collected about “235 terabytes of data" and that it adds about 5 terabytes per month.

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