Blu-ray is an optical disc format designed to display high definition video and store large amounts of data. Blu-ray is the successor to DVD. The standard was developed collaboratively by Hitachi, LG, Matsushita (Panasonic), Pioneer, Philips, Samsung, Sharp, Sony, and Thomson.
A compact disc is a portable storage medium that can be used to record, store and play back audio, video and other data in digital form. A standard compact disc measures 4.7 inches, or 120 millimeters , across, is 1.2 mm thick, weighs between 15 grams and 20 grams, and has a capacity of 80 minutes of audio, or 650 megabytes to 700 MB of data.
Storage devices have been some of the most important computer devices since the early 1970s. They are used to store information (music, videos, documents) from your computer system. Two general types of storage devices exist (internal and external). An internal storage device is implanted inside of your computer.
A punched card or punch card is a piece of stiff paper that can be used to contain digital data represented by the presence or absence of holes in predefined positions. Digital data can be for data processing applications or, in earlier examples, used to directly control automated machinery.
A tape drive is a device that stores computer data on magnetic tape, especially for backup and archiving purposes. Like an ordinary tape recorder, a tape drive records data on a loop of flexible celluloid-like material that can be read and also erased.
A Zip drive and Zip disk is a hardware data storage device developed by Iomega that functions like a standard 1.44" floppy drive and diskette. What makes the Iomega Zip drive unique is its capability to hold up to 100 MB of data or 250 MB of data on the later models.