Software is a collection of programs and that provide the instructions to a computer what to do and how to do it. We can also say software refers to one or much computer programs and data held in the storage of the computer for some purposes. In another ways, software is a set of programs, procedures, algorithms and its documentation. In difference to hardware, software is insubstantial, meaning it "cannot be touched". Software is occasionally used in a more narrow sense, denotation application software only.
Examples of computer software consist of:
- Application software includes end-user applications of computers such as word processors or ERP software, and video games for each group of users.
- Distributed systems and Middleware control.
- Programming languages define the syntax and semantics. For example, many mature banking applications were written in the COBOL language. Often written in more modern programming languages for newer applications.
- System software includes operating systems, which regulation computing resources. Today large applications successively on remote machines such as websites are measured to be system software, because the end-user interface is generally through a graphical user interface, for example a web browser.
- Testware is a software for testing hardware or a software package.
- Firmware is low-level software often stored on electrically programmable memory devices.
- Device drivers manage parts of computers for instance disk drives, printers, CD drives, or computer monitors.
- Programming tools help perform computing tasks in any type listed over.
Computer software is so called to differentiate it from computer hardware, that encompasses the physical interconnections and devices mandatory to stockpile and run the software. The lowest executable code consists of machine language instructions particular to an individual processor. A machine language consists of groups of binary values. Software can also be written in an assembly language, a mnemonic symbol of a machine language. Assembly language must be assembled into object code via an assembler
System software
System software provides the basic functions for computer practice and helps run the computer hardware and system. It includes a combination of the following:
- Device drivers
- Operating systems
- Servers
- Utilities
- Window systems
Programming software
Programming software typically provides tools to assist a programmer in writing computer programs, and software using different programming languages in a more convenient way. The tools include:
- Compilers
- Debuggers
- Interpreters
- Linkers
- Text editors
Application software
Application software is industrial to help in any mission that advantages from computation. It is a broad category, and encompasses software of many kinds. This category includes:
- Business software
- Databases
- Decision making software
- Educational software
- Image editing
- Industrial automation
- Mathematical software
- Medical software
- Molecular modeling software
- Quantum chemistry and solid state physics software
- Simulation software
- Spreadsheets
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