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.

How many photo images can be stored on a Memory Card?

The following information for photo images is a guideline, the number will vary based on several things, such as camera model, internal file size, compression settings, what you have chosen for resolution and compression mode settings and finally, JPEG or .JPG (is a compressed file) compression will result in different file sizes based upon picture complexity…
MP=Megapixels: MB=Megabytes, GB = Gigabytes

This approx. number of photo images can be used on these 2 different size SDHC Memory Cards on 4 different size cameras - 6MP, 8MP, 10MP and 12MP. The SDHC Memory Card is one of the most popular memory card styles used today by camera manufacturers..

4GB: 6MP=1905 images; 8MP 1270 images; 10MP 802 images or 12MP 677 images

8GB: 6MP=3812 images; 8MP 2540 images; 10MP 1604 images or 12MP 1354 images

Note: all memory cards have a DCIM folder (Digital Camera Image) which should never be removed..