What type of language used to programming an atmet 89c51u controller I.C?

How can I progmmed a microcontrolled I.C. like 89c51 with computer interface

What type of language used to programming an atmet 89c51u controller I.C?
you can use the Intel 8-bit assembly language, or C. You can probably find a free compiler for the assembly easily (if not, I think I still have it). For C, the compiler I recommend is Keil (www.keil.com). After that you need to load the software into the micro, or external RAM. Some support serial download through the serial port, but if not, you need a "burner" to load it.