CRT monitors were the only choice
that computer users had for monitor technology for many years. Cathode ray tube,
abbreviated as CRT, technology has been in use for more than a
century. CRT is found in many traditional television sets and computer monitors. A CRT works by moving an electron beam back and forth across the back of the screen. Each time the beam makes a pass across the screen, it lights up phosphor dots on the inside of the glass tube, thereby illuminating the active portions of the screen. By drawing many such lines from the top to the bottom of the screen, it creates an entire screen of images.
CRT monitors had their great advantages. They can be viewed virtually
from any angle, which seems hard for LCD monitors to achieve.
Since the refresh rate and response time of the light weight LCD
monitors were improved significantly from its very original
specifications, CRT display monitors have been gradually phasing out the
computer market. As a result, supplies on CRT monitors are permanently
discontinued. It is predictable that CRT technology will soon become a
history in the computer industry.