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  2. Online public access catalog - Wikipedia

    en.wikipedia.org/wiki/Online_public_access_catalog

    Online public access catalog. The online public access catalog ( OPAC ), now frequently synonymous with library catalog, is an online database of materials held by a library or group of libraries. Online catalogs have largely replaced the analog card catalogs previously used in libraries.

  3. Quantum computing - Wikipedia

    en.wikipedia.org/wiki/Quantum_computing

    Computer engineers typically describe a modern computer's operation in terms of classical electrodynamics.Within these "classical" computers, some components (such as semiconductors and random number generators) may rely on quantum behavior, but these components are not isolated from their environment, so any quantum information quickly decoheres.

  4. P versus NP problem - Wikipedia

    en.wikipedia.org/wiki/P_versus_NP_problem

    The P versus NP problem is a major unsolved problem in theoretical computer science. Informally, it asks whether every problem whose solution can be quickly verified can also be quickly solved. Here, quickly means an algorithm that solves the task and runs in polynomial time exists, meaning the task completion time varies as a polynomial ...

  5. Judge dismisses lawsuit challenging absentee voting procedure ...

    www.aol.com/news/judge-dismisses-lawsuit...

    A Wisconsin judge dismissed a lawsuit Monday that challenged absentee voting procedures, preventing administrative headaches for local election clerks and hundreds of thousands of voters in the ...

  6. AOL Mail

    mail.aol.com

    Explore our AOL Mail product page to learn even more. Start for free. Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  7. DuckDuckGo - Wikipedia

    en.wikipedia.org/wiki/DuckDuckGo

    DuckDuckGo is an American software company that offers a number of products intended to help people protect their online privacy. [5] The flagship product is a search engine that has been praised by privacy advocates.

  8. Open access - Wikipedia

    en.wikipedia.org/wiki/Open_access

    Open access logo, originally designed by Public Library of Science. A PhD Comics introduction to open access. Open access ( OA) is a set of principles and a range of practices through which research outputs are distributed online, free of access charges or other barriers. [ 1] With open access strictly defined (according to the 2001 definition ...

  9. Public-domain software - Wikipedia

    en.wikipedia.org/wiki/Public-domain_software

    The Creative Commons Public Domain Mark indicates works that are in the public domain. Public-domain software is software that has been placed in the public domain, in other words, software for which there is absolutely no ownership such as copyright, trademark, or patent. Software in the public domain can be modified, distributed, or sold even ...