LEDs present many advantages compared with traditional incandescent and fluorescent lights:

1)Lower enerrgy consumption:LEDs produce more light per watt than incandescent and fluorescent.

2) Longer lifetime: LED's may last up to 50 000 hours in many cases, much longer than the incandescent and fluorescent lights.

3) Faster switching: LEDs light up very quickly. A typical red indicator LED will achieve full brightness in microseconds.

4)Environment friendly:unlike fluorescent lamps,LEDs do not contain mercury