Also called a CD-ROM player, it is a device that can read information from a CD-ROM. CD-ROM drives can be either internal, in which case they fit in a bay, or external, in which case they generally connect to the computer's SCSI interface or parallel port. Parallel CD-ROM players are easier to install, but they have several disadvantages: They're somewhat more expensive than internal players, they use up the parallel port which means that you can't use that port for another device such as a printer, and the parallel port itself may not be fast enough to handle all the data pouring through it.
There are a number of features that distinguish CD-ROM players, the most important of which is probably their speed. CD-ROM players are generally classified as single-speed or some multiple of single-speed. For example, a 4X player access data at four times the speed of a single-speed player. Within these groups, however, there is some variation. Also, you need to be aware of whether the CD-ROM uses the CLV or CAV technology. The reported speeds of players that use CAV are generally not accurate because they refer only to the access speed for outer tracks. Inner tracks are accessed more slowly.
Two more precise measurements are the drive's access time and data transfer rate. The access time measures how long, on average, it takes the drive to access a particular piece of information. The data transfer rate measures how much data can be read and sent to the computer in a second.
Finally, you should consider how the player connects to your computer. Many CD-ROMs connect via a SCSI bus. If your computer doesn't already contain such an interface, you will need to install one. Other CD-ROMs connect to an IDE or Enhanced IDE interface, which is the one used by the hard disk drive; still others use a proprietary interface.
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 »