Computers_memory

include component="page" page="menu-computers" editable="1" toc =Filesizes & Memory= Information is stored as FILES on your computer system. Files require some quantity of "memory" - (ie. the Hard Drive, RAM, CD space) to hold them. This FILESIZE is typically measured in terms of BITS, BYTES, KILOBYTES, MEGABYTES, GIGABYTES and TERABYTES.


 * "1 BIT" is the SMALLEST unit of measurement we can use - it can store only one of two possible values (ie. 1 or 0; "true" or "false"; "on" or "off")
 * 1 BYTE = 8 bits clustered one after the other (ie. "10011010")
 * 1 KILOBYTE = 1024 bytes
 * 1 MEGABYTE = 1024 kilobytes (or 1024KB)
 * 1 GIGABYTE = 1024 megabytes (or 1024MB)
 * 1 TERABYTE = 1024 gigabytes (or 1024GB)
 * 1 TERABYTE = 1024 gigabytes (or 1024GB)


 * Your school server space allows 150MB of storage. Each student in the school has the same
 * We rarely express our file sizes in "bits" or even "bytes" these days - typical files are simply too large.

What are the storage capacities for each of the following devices:


 * 5.25" Floppy disc (600KB / 1.2 MB)
 * 3.5" Floppy disc (720KB / 1.44MB)
 * ZIP disc (100MB)
 * CDROM disc (700MB)
 * DVD+R (single layer) (4.71GB)
 * DVD (dual layer) (8.5 GB)
 * HD DVD (30GB / 51GB)
 * BluRay DVD (25GB / 50GB)

include component="page" page="JMSSTech:FileSizes" editable="1"