What will be address range which can be represented in 20 bit?

What will be address range which can be represented in 20 bit? 

	Binary	Hexadecimal
Min possible	0000 0000 0000 0000 0000	00000
Max possible	1111 1111 1111 1111 1111	FFFFF

In c any hexadecimal number start with 0x 0r 0X So, address range   will be 0x0000 to 0xFFFF. So in turbo C 3.0 memory address of all variables must be within 0x0000 to oxFFFF.

It is 1MB memory range.

Note.

2^10 = 1KB

2^20 = 1MB

2^30 = 1GB  

Where 10, 20, 30 are number of bit.