Assembler programming NO. 1
This post is meant to be a short introduction to a new science branch on my blog dedicated programming in Assembler.
One can think that the use of Assembler is deprecated these days, but there are still many reasons for a computer scientist to know this low-level language.
The primary reason to program in assembly language, as opposed to an available high-level language, is that the speed or size of a program is critically important.
For example, consider a computer that controls a piece of machinery, such as a car’s brakes. A computer that is incorporated in another device, such as a car, is called an embedded computer. This type of computer needs to respond rapidly and predictably to events in the outside world. Because a compiler introduces uncertainty about the time cost of operations, programmers may find it difficult to ensure that a high-level language program responds within a definite time interval—say, 1 millisecond after a sensor detects that a tire is skidding. An assembly language programmer, on the other hand, has tight control over which instructions execute. In addition, in embedded applications, reducing a program’s size, so that it fits in fewer memory chips, reduces the cost of the embedded computer.
Here is a picture illustrating the converting process for both high and low level languages.
Source for further reading: http://pages.cs.wisc.edu/~larus/HP_AppA.pdf
Filed under: Assembler, Informatics, Science | 3 Comments
Tags: Assembler, mips, Programming