Why is assembly language efficient?

Answer 1

Assembly uses commands you can begin to understand, like JSR (Jump to subroutine which changes points in a code) machine code on the other hand is the code that the machine reads. This would only look like numbers to you, probably in hex code. Basically the higher level a language is the easier to understand because of the level of abstraction. It goes, machine code, assembly language, then things like C then java or visual basic. In VB you can write commands almost the same as you would construct an English sentence, the compiler then converts this down to machine code which the processor can understand and execute.

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Answer 2

Machine language is raw binary data - ex. 100101101001010101010101... enjoy programming in that. Assembly language gives you a layer of abstraction and it much easier to comprehend - ex. add $eax $ebx, sub $eax $esp, etc.

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Answer 3

Assembly language is efficient because it is at a low-level of abstraction. Because of this, the programmer is in more control of the computer's processor than if he/she were to program in a high level language, meaning that the program made executes faster.