Software

Ministry for development of information technologies and communications of the republic of Uzbekistan karshi branch of Tashkent university of information technologies named after Muhammad al-khorazmy Software Application software Easy-to-use programs designed to perform specific tasks System software Programs that support the execution and development of other programs Two major types Operating systems Translation systems (compilers linkers) Software Copyright © 200 by BrooksCole Publishing Company A division of International Thomson Publishing Inc. Computer Software Relationships User Interface Basic Input and Output Services (BIOS) needed for a computer to boot up User Interface Operating System User Interface Application Programs Computer Hardware Application Software Application software makes computer popular and easy to use Common application software: Microsoft Word, WordPerfect PowerPoint Netscape, Internet Explorer PhotoShop, Photo-Paint Quick Time Dreamweaver Controls and manages the computing resources Examples Windows, Unix, MSDOS, Important services that an operating system provides: Security: prevent unauthorized users from accessing the system Commands to manipulate the file system Input and output on a variety of devices Window management Operating System What is a (programming) language? A program needs to be written in a language There are many programming languages Low-level, understandable by a computer High-level, needs a translator! C++ is a high level programming language A sequence of instructions A program (in computer language) An algorthm (in human language) Machine binary language: unintelligible Low-level assembly language Mnemonic names for machine operations Explicit manipulation of memory addresses Machine-dependent High-level language Readable Machine-independent Levels of programming language Machine binary language Low-level assembly High-level An example: ...

Ministry for development of information technologies and communications of the republic of Uzbekistan karshi branch of Tashkent university of information technologies named after Muhammad al-khorazmy Software Application software Easy-to-use programs designed to perform specific tasks System software Programs that support the execution and development of other programs Two major types Operating systems Translation systems (compilers linkers) Software Copyright © 200 by BrooksCole Publishing Company A division of International Thomson Publishing Inc. Computer Software Relationships User Interface Basic Input and Output Services (BIOS) needed for a computer to boot up User Interface Operating System User Interface Application Programs Computer Hardware Application Software Application software makes computer popular and easy to use Common application software: Microsoft Word, WordPerfect PowerPoint Netscape, Internet Explorer PhotoShop, Photo-Paint Quick Time Dreamweaver Controls and manages the computing resources Examples Windows, Unix, MSDOS, Important services that an operating system provides: Security: prevent unauthorized users from accessing the system Commands to manipulate the file system Input and output on a variety of devices Window management Operating System What is a (programming) language? A program needs to be written in a language There are many programming languages Low-level, understandable by a computer High-level, needs a translator! C++ is a high level programming language A sequence of instructions A program (in computer language) An algorthm (in human language) Machine binary language: unintelligible Low-level assembly language Mnemonic names for machine operations Explicit manipulation of memory addresses Machine-dependent High-level language Readable Machine-independent Levels of programming language Machine binary language Low-level assembly High-level An example: ...