Difference between CRT and LCD monitor

Flat panel monitors are based on LCD (liquid crystal display) technology. They are smaller in size and use less energy than a standard CRT (cathode ray tube) monitor. Cathode ray tube (CRT) monitors are a common type of monitor. ... Inside a color CRT, three electron guns shoot streams of electrons at the screen.

                         

Differences Between RAM & ROM

Data in RAM is not permanently written. When you power off your computer the data stored in RAM is deleted. ROM is a type of non- volatile memory. Data in ROM is permanently written and is not erased when you power off your computer.

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