Week 3

Software is an intangible part of a computer that tells what a computer supposed to carry out and how to do it. It is a collection of computer programs together with the related data. Software is divided into three categories which is system software, application software and programming language. Software layer consisted of application program, operating system, device drivers, and system software. One of the type of system software is operating system(OS). It is the most important software in all computer systems. The OS sometimes called a platform program. Stand-alone OS, Server OS, and Embedded OS is the type of Operating System.

Programming Language (PL) is a set of word, abbreviations and symbols that enables a programmer to communicate instructions to a computer. There are two type of programming language; Low-Level Language ang High-Level Language. The first generation of PL is Machine Language, the second generation languages is Assembly Language, the third generation languages is Procedural Languages, the fourth generation languages is Non-Procedural Languages and last but not least is the fifth generation languages which are an issue of debate in the programming community since some programmers cannot agree that they even exist.