Understanding CD Burner Speeds
Have you ever wondered what all those numbers mean when you go to buy a CD burner? When you see a configuration that looks like 12x2x24 (three numbers separated by the letter "x"), these numbers indicate the drive speeds of the CD drive. The "x" stands for the transfer of 150 KB of data per second, and each number represents a different action that the CD drive can take.
A CD-R drive has two actions -- recording onto and reading from compact discs. A CD-RW drive has three actions -- recording, rewriting (erasing and recording over) and reading. When looking at the drive speeds, the first number ("12" in the above example) indicates the speed at which the CD drive will record data onto a CD-R compact disc. So, in the above example, the CD drive will record data at 12 times 150 KB/second. The second number ("2" in the above example) indicates the speed at which the CD drive will rewrite data onto a CD-RW compact disc.
So in the above example, the CD drive will rewrite data onto the compact disc at 2 times 150 KB/second. Typically, the second number, the rewrite speed, is lower than the first number, the write speed, because rewriting is a slower process than writing. The last number ("24" in the above example) indicates the speed at which the drive will read data from a compact disc. So in the above example, the CD drive will read data from a compact disc at 24 times 150 KB/second.
CD-R compact discs are discs that can be recorded on only once. Once the data has been burned, it is permanent and cannot be erased. CD-RW compact discs are discs that can be recorded, erased and re-recorded over. Most audio CD players, especially older models, can only read CD-R discs, so it is best to record music onto CD-Rs. CD-RWs are typically used to store data or used as back up files.
Key Terms To Understanding CD Media
Nee help understanding DVD speeds, formats and burning? Click here for Webopedia's Guide to DVDs.
Stay up to date on the latest developments in Internet terminology with a free weekly newsletter from Webopedia. Join to subscribe now.
The following facts and statistics capture the changing landscape of cloud computing and how service providers and customers are keeping up with... Read More »Facts about Computer Science: Education and Jobs
The following computer science facts and statistics provide a quick introduction to the changing trends in education and related careers. Read More »Texting & Chat Abbreviations
From A3 to ZZZ this guide lists 1,500 text message and online chat abbreviations to help you translate and understand today's texting lingo. Read More »
Learn about each of the five generations of computers and major technology developments that have led to the computing devices that we use... Read More »Computer Architecture Study Guide
Computer architecture provides an introduction to system design basics for most computer science students. Read More »Network Fundamentals Study Guide
Networking fundamentals teaches the building blocks of modern network design. Learn different types of networks, concepts, architecture and... Read More »