app

A mobile app is software designed to run on smartphones and other mobile devices. A web app is software designed to run inside a web browser.

Application software (app for short) is a program or group of programs designed for end-users. Examples of an application include a word processor, a spreadsheet [电子表格], an accounting application, a web browser, an email client, a media player, a file viewer, a console game [游戏机上的游戏], or a photo editor.

An operating system (OS) is system software that manages computer hardware, software resources, and provides common services for computer programs. A compiler is a computer program that translates computer code written in one programming language (the source language) into another language (the target language). The database management system (DBMS) is the software that interacts with end users, applications, and the database itself to capture and analyze the data. Electronic design automation (EDA), also referred to as electronic computer-aided design (ECAD), is a category of software tools for designing electronic systems such as integrated circuits and printed circuit boards.

The delineation between system software such as operating systems and application software is not exact, however, and is occasionally the object of controversy. For example, one of the key questions in the United States v. Microsoft Corp. antitrust trial was whether Microsoft's Internet Explorer web browser was part of its Windows operating system or a separable piece of application software. As another example, the GNU/Linux naming controversy is, in part, due to disagreement about the relationship between the Linux kernel and the operating systems built over this kernel. In some types of embedded systems, the application software and the operating system software may be indistinguishable to the user, as in the case of software used to control a VCR, DVD player, or microwave oven.

The word "application" used as an adjective is not restricted to the "of or pertaining to application software" meaning.[5] For example, concepts such as application programming interface (API), application server, application virtualization, application lifecycle management and portable application apply to all computer programs alike, not just application software.

Sometimes a new and popular application arises which only runs on one platform, increasing the desirability of that platform. This is called a killer application or killer app. For example, VisiCalc was the first modern spreadsheet software for the Apple II and helped selling the then-new personal computers into offices. For Blackberry it was their email software.

VisiCalc (for "visible calculator") was the first spreadsheet computer program for personal computers, originally released for Apple II by VisiCorp in 1979. It is often considered the application that turned the microcomputer from a hobby for computer enthusiasts into a serious business tool, prompting IBM to introduce the IBM PC two years later. VisiCalc is considered to be Apple II's killer app. It sold over 700,000 copies in six years, and as many as 1 million copies over its history. Bob Frankston joined Bricklin, and the pair formed the Software Arts company, and developed the VisiCalc program in two months during the winter of 1978-79. The point: 没某些人的乔爸爸啥事。

  

六级/考研单词: mobile, hardware, web, browse, medium, console, edit, compute, translate, data, interact, electron, integrate, controversy, unite, embed, microwave, oven, adjective, alike, desire, seldom, pastime, enthusiasm, million