Question

what is the fullform of LED,LCD,MCB,USB,CFL,CFC

Answer 1

Thanks for asking the question.
Here are the full forms of the abbreviations given:
1. LED = Light Emitting Diode
2. LCD = Liquid Crystal Display
3. MCB = Miniature Circuit Breaker
4. USB = Universal Serial Bus
5. CFL = Compact Fluorescent Lamp
6. CFC = Chlorflorocarbon
LED is a just a new or improved version of LCD. There are fluorescent light in an LED which are behind the screen and on the the hand, LED have light emitting diodes which are around the edges or behind the screen.
MCB is used to protect the circuit from damage due to excess current.
USB is used to store important documents.
CFL are energy saving lights. They consume less energy as compared to LED bulbs.
CFC is an chemical organic compound that consists of carbon, chlorine and fluorine. 
Hope it helps.

Answer 2

The fullform of LED, LCD, MCB, USB, CFL, CFC are :

1.   LED - Light Emitting Diode which is used in electronics and automotive industries.

2.   LCD - Liquid Crystal Display which is used as display in computer and notebook.

3.   MCB - Miniature Circuit Breaker is used for automatically switching off electrical circuit.

4.   USB - Universal Serial Bus used to define the cables and connectors.

5.   CFL - Compact Fluorescent Light which are energy-saving lights.

6.   CFC - Chlorofluorocarbon which are main pollutants which causes ozone hole.