Lots of confusion surrounds these terms, so I'm really glad you asked. b = bit which is a single 1 or 0 B = byte which is 8 bits. It takes 8 bits to represent a single character such as 5 or Y. M = Mega or 1 Million of ... G = Giga or 1 Billion of ... I have two 500GB hard drives I use solely for storage. T = Tera or 1 Trillion of ... There are now hard drives on the market that can hold 1TB or more of data. So, a MB = a MegaByte which means 1 million bytes worth of data. A floppy disk can hold up to 1.38MB of data. A typical CD holds up to 700MB and a DVD can store about 4,700MB or 4.7GB. You will probably NEVER hear anything described in Mb (MegaBit) format. That format is basically used only by engineering majors. Yes, a 990MB movie will fit comfortably on a single 4.7GB DVD disc You could fit 4 movies of that size on there if you really wanted to. :) Peace, Gman http://www.bornagainamerican.org "The only dumb questions are the ones we fail to ask" ----- Original Message ----- From: "Patricia" <rhekay@xxxxxxxxxx> To: "PCTechTalk" <pctechtalk@xxxxxxxxxxxxx> Sent: Wednesday, February 11, 2009 8:40 AM Subject: -=PCTechTalk=- MB's? > whats the norm? what does MB mean? megabytes or mage bit? > If I have a 990 MB movie and I want to put it on a DVD+R (which holds 4.7 > GB) > will it fit? > > > 'Government is like a baby: An alimentary canal with a big appetite at one > end and no sense of responsibility at the other.' - Ronald Reagan --------------------------------------------------------------- Please remember to trim your replies (including this sentence and everything below it) and adjust the subject line as necessary. To unsubscribe or change your email settings: //www.freelists.org/webpage/pctechtalk To access our Archives: http://groups.yahoo.com/group/PCTechTalk/messages/ //www.freelists.org/archives/pctechtalk/ To contact only the PCTT Mod Squad, write to: pctechtalk-moderators@xxxxxxxxxxxxx To join the PCTableTalk off-topic group, send a blank email to: pctabletalk+subscribe@xxxxxxxxxxxxxxxx ---------------------------------------------------------------