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Source code and Object Code
Software is a computer program that is compiled of different types of code; source code and object code, and the two work in tandem to enable a program to be run on a computer.
Source Code
The source code refers to the programming statements written by a computer programmer then saved as a named file. This file is then known as the source code, and is ready to be compiled to create the compiled file.
Object Code
The compiled file is known as the object code, which is only readable by a machine processor.
Additional Info
When you receive a software package or application, it is usually the compiled product, or object code that you are purchasing, few software developers include the source code too. This is to prevent the software from being developed by third parties, and protects the developers interests but this can be problematic if the developer goes bust and the end user is left with a redundant object code.