32. Discuss the following devices:
(a) Light Pen (b) Graphic tablet
(c) CD-ROM
(d) DVD
Answers
Answer:
a) light pen is a computer input device in the form of a light-sensitive wand used in conjunction with a computer's cathode-ray tube (CRT) display.
Explanation:
b) graphics tablet (also known as a digitizer, drawing tablet, drawing pad, digital drawing tablet, pen tablet, or digital art board) is a computer input device that enables a user to hand-draw images, animations and graphics
c) Stands for "Compact Disc Read-Only Memory." A CD-ROM is a CD that can be read by a computer with an optical drive. The "ROM" part of the term means the data on the disc is "read-only," or cannot be altered or erased.
d)Digital versatile discs (DVDs) can store more information than compact discs (CDs) because they have smaller pits, placed closer together. ... Of them all, DVD, which stands for digital versatile disc, is poised to become the most popular and reliable means for storing data, especially high-quality digital video.