what is machine language its advantages and disadvantages

(2) Machine language:-     

 The instruction written in machine language is directly executed by our computer. there is no any requirement of translator it is also called a low level language.It is a language which we write all instruction using 0 and 1, it is called binary digit.
Advantage :-    (1) It makes Fast and efficient use of the computer.
                         (2) It don't require any translator to translate any code.

Disadvantage :-   (1) problem in writing the instruction.
                            (2) It require 0&1 to write an instruction.
                            (3) It takes large space& time.
                            (4) It takes more time to understand the instruction written in machine language by                                  a user(another)