New tools targeted at assembly language programmers, such as HLA, RadASM (an integrated development environment) and OllyDbg (a machine language debugger), are slowly providing the advanced ...

Assembly, or asm, features "a very strong (generally one-to-one) correspondence between the language and the architecture's machine code instructions," according to Wikipedia.

These conversion programs turn the programmer's source code, which is what the programmer writes, into machine language (machine code). See assembly language, compiler and interpreter.

Five hundred lines written by a seasoned programmer can perform the same processing as two thousand lines of code by another. See assembly language, machine language, microcode and compiler.