for different types of micro

[Ashutosh Bhatt]

for different types of micro controller different types of cross compilers are available

for 8051-52 – KEIL

for AVR – AVR studio

for PIC – mikroPIC

etc

these cross compilers will convert and generate HEX files when C program is successfully compiled

to down load this HEX file into micro controller you have to use EEPROM programmer. its combination of HW and SW 

so many such programmers are radily available in market