A Compact Disc (CD) is an optical storage device capable of holding up to 650 MB of digital data. It uses a 4.75-inch reflective disk, and utilizes laser technology for data reading. CDs come in various forms such as CD-ROM, CD-R, and CD-RW.
A laser printer is a computer printer that uses a laser beam to generate an image, which is then transferred to paper electrostatically. Laser-printer output is produced very fast, with quality that approaches that of typesetting.
