Flash Drives and Optical Storage In Computing, optical disc drives are described by Wikipedia as a disk drive that uses laser light or electromagnetic waves within or near the visible light spectrum as part of the process of reading or writing data to or from optical discs. Some optical disc drives can only read from discs, but recent drives are able to both read and record, also called burners or writers. These drives are very commonly used in computers to read software and consumer media distributed
The Central Processing Unit The CPU (Central Processing Unit) is the processor within the computer. It is a microchip which carries out all of the searching, sorting, selecting and calculating within the computer. The CPU also has an internal clock which determines the maximum speed at which everything within the computer is done. CPUs run at different speeds measured in MHz. The Intel Pentium
During manufacturing, this plastic is impressed with microscopic bumps arranged as a single, continuous, extremely long spiral track of data. Once the clear piece of polycarbonate is formed, a thin, reflective aluminum layer is sputtered onto the disc, covering the bumps. Then a thin acrylic layer is sprayed over the aluminum to protect it. (Brian 1) After that, you have a final product called a CD. Often, you will hear about bumps on a CD. These bumps are what the laser reads. They are
Optical Storage Mediums The most common way of storing data in a computer is magnetic. We have hard drives and floppy disks (soon making way to the CD-ROM), both of which can store some amount of data. In a disk drive, a read/write head (usually a coil of wire) passes over a spinning disk, generating an electrical current, which defines a bit as either a 1 or a 0. There are limitations to this though, and that is that we can only make the head so small, and the tracks and sectors so close
My Experience with Computers I remember walking single file to the computer Lab. It was a room that was completely new to my whole fifth grade class. What did it look like inside? Did we all really get to play on these machines? I had never even typed on a computer before. This was fifth grade and my computer experience was, well, let's just say lacking. Learning to use these computers was a great experience for me. I was pretty scared but I learned how to play a lot of games and the teachers
technology of burning CDs has many advantages and positive aspects to it but there are also negative aspects and ethical issues to consider. CD burning enables any individual with the software and equipment to make a duplicate copy of any compact disc. Compact disks are also able to hold information, and this is a major advantage of burning technology. With the ability to burn information onto CDs, people are now able to make larger files and presentations and are not limited as much by storage
1972 Philips announced a technique to store data on an optical disc. First in 1981 Philips and Sony proposed the Compact Disc Digital Audio standard (CD-DA) which was coded in the so-called Red Book [Philips and Sony Corporation, 1991]. The development of this technique revolutionized the audio world by introducing truly digital technology for the first time. It was in the year 1982 that Philips and Sony launched the first players and discs on the market. The CD became the music carrier of choice