Методическое пособие по совершенствованию навыков чтения и говорения на английском языке для студентов фксиС и фитиУ
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английский для ИТ 1
- Бұл бет үшін навигация:
- Commercial software
- Open source
- Comprehension check
| Copyright laws have fairly severe restrictions on copying, distributing, and reselling software; however, a license agreement might offer additional rights to consumers. The licenses for commercial software, shareware, freeware, open source, and public domain software specify different levels of permission for software use, copying, and distribution.
Commercial software is typically sold in computer stores or at Web sites. Although you “buy” this software, you actually purchase only the right to use it under the terms of the software license. Shareware is copyrighted software marketed under a “try before buy” policy. It typically includes a license that permits you to use software for a trial period. To use it beyond the trial period you must pay a registration fee. A shareware license usually allows you to make copies of the software and distribute them to others. If they choose to use the software, they must pay a registration fee as well. Freeware is copyrighted software that is available for free. Because the software is protected by copyright, you cannot do anything with it that is not allowed by copyright law or by the author. Typically, the license for freeware permits you to use the software, copy it, and give it away, but does not permit you to alter it or sell it. Many utility programs, device drivers, and some games are available as freeware. Open source software makes the uncompiled program instructions – the source code – available to programmers who want to modify and improve the software. Public domain software is not protected by copyright because the copyright has expired, or the author has placed the program in the public domain, making it available without restriction. It may be freely copied, distributed, even resold. The primary restriction on public domain software is that you are not allowed to apply for a copyright on it. Comprehension check. Match the beginnings of the sentences in the first column with the endings in the second.
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