1. intro, Slides of System Programming

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System Programming

An Intro to Subject

System Software consists of a variety of

programs that support the operation of a

computer.

The software makes it possible for the users to

focus on an application or other problem to be

solved, without needing to know the details of

how the machine works internally

System Software and Machine Architecture Machine dependency of system software  (^) System programs are intended to support the operation and use of the computer.  (^) Machine architecture differs in:  (^) Machine code  (^) Instruction formats  (^) Addressing mode  (^) Registers Machine independency of system software  (^) General design and logic is basically the same:  (^) Code optimization  (^) Subprogram linking

System Software and Machine Architecture One characteristic in which most system software differs from application software is machine dependency. System programs are intended to support the operation and use of the computer itself, rather than any particular application. e.g. of system software  (^) Text editor, assembler, compiler, loader or linker, debugger, macro processors, operating system, database management systems, software engineering tools, …

People Application Program Utility Program (Library) Debugging Aids Macro Processor Text Editor Compiler Assembler Loader and Linker OS Memory Processor Device Information Management and Process Management Management Management Bare Machine (Computer)

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System Software

The system software includes

 Assembler

 Linker

 Loader

 Macro processor

 Text editor

 Compiler

 Operating system

 Debugging system

 Source Code Control System

 (optional) Database Management System