HOW CAN I QUICKLY LEARN SYSTEM C LANGUAGE TO PROGRAM EMBEDDED SYSTEMS,LIKE TEST EQUIPMENTS

 

Google for tutorials. Read sample programs. Program simple problems. Relax, repeat.

One tutorial is: http://www.opencircuits.com/A_Really_Basic_Guide_to_the_PIC_Microprocessor_and_BoostC

Blink an LED to say Hi Universe

 

Dou you really mean System C (as in OSCI), or just C for embedded system?

 

Quite a good course to get you started is "Teach Yourself C in 21 Days". You can get a free online version at http://neonatus.net/C/index.html.