Question

can anyone know which software should be used for assembly coding of microcontrollers

Answer 1

Well, you'll need an Editor and an Assembler. If you're looking for some fancy IDE, where you can debug via JTAG and stuff, you'd have to tell us the architecture you want to code for, pls..

For Example, you could use the GNU-Assembler simply known as "as"
-> http://www.gnu.org/software/binutils/

Answer 2

You can use Keil.

Answer 3

plz tell me for study avr microcontroller from where i can get appropriate material

Answer 4

@ravinder you can study the book "AVR Microcontroller by Mazidi ".It will be really helpful for you.