Computer Science 105 - Beekman Part 2 Chapter 3 Notes

Compact disc recordable is write once read many while

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: nd write bits of data on a reflective aluminum layer of the disc Optical disks are slower than magnetic disks and are more susceptible to damages via scratches CD- ROM discs similar to music compact disks are read only devices that can be used as storage devices, replaced by drives that can write as well as read A CD- RW drive reads data from CD- ROMs and burn and record on CD- RW disks CD- R (compact disc- recordable) is write once, read many while CD- RW (compact disc- rewriteable) can write erase and rewrite’ DVD- ROM drives can play DVD movies DVD/RW can be write once or rewritable Blu- ray (BD) can write on media that hold up to 50 GB on two layers BD- R reads Blu- ray BD- RW can be rewritten Hard disk drives and optical disc drives come in internal drives and external drives, Internal drives resides inside the casing of a computer, in tower computer, in a tower computer, each internal drive resides in a bay, a space that holds one drive External drives can be connected to system via USB or FireWire ports • • • • • • • • • • • • Solid- state storage devices are rewritable memory devices with no moving parts Flash memory is a type of erasable memory chip that can serve as reliable, low energy, quiet and compact USB flash drives or thumb...
View Full Document

Ask a homework question - tutors are online