Compilers for Not Yet Techies

"Computer Careers: Working With Special Translation Programs That Make Sure Software Programs Can be Understood by the Hardware"

by Richard Stooker, President Info Ring Press and author of Secrets of Changing to a Computer Career

Compilers are software programs which translate from one programming language into another language. They are primarily used for compiling a program written in a 3rd generation / 3GL computer language such as C into machine-level assembly language. Remember that at the level of their machine circuitry, computers don't understand Fortran or C++ -- they understand only off and on, 1 and 0. It's the sequences of 1s and 0s that matter. Compilers convert/translate the language code into machine-readable form.

Compilers read the source program and translate it to the target program. The first one was created in the early 1950s.

The kinds of compilers are:

Single pass
Multi-pass
Load and go
Debugging
Optimizing

There are two parts to the process: analysis and synthesis. In the first part, operations are recorded in a hierarchical tree structure called the syntax tree. Compilers might do linear analysis, hierarchical analysis and semantic analysis.

In the final phase, compilers use a code generator to produce the machine code.

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