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  2. eng.libretexts.org eng.libretexts.org
    2.1: Information Systems
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    1. zbah1967 09 Sep 2025
      The Eras of Business Computing Era Hardware Operating System Applications Mainframe (1960s) Terminals connected to mainframe computer. Time-sharing (TSO) on MVS Custom-written MRP software PC (mid-1980s) IBM PC or compatible. Sometimes connected to mainframe computer via expansion card. MS-DOS WordPerfect, Lotus 1-2-3 Client-Server (late 80s to early 90s) IBM PC “clone” on a Novell Network. Windows for Workgroups Microsoft Word, Microsoft Excel World Wide Web (mid-90s to early 2000s) IBM PC “clone” connected to company intranet. Windows XP Microsoft Office, Internet Explorer Web 2.0 (mid-2000s to present) Laptop connected to company Wi-Fi. Windows 7 Microsoft Office, Firefox Post-PC (today and beyond) Apple iPad iOS Mobile-friendly websites, mobile apps

      I want to replicate this for my flash cards.

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    eng.libretexts.org/Courses/Prince_Georges_Community_College/INT_1010:_Concepts_in_Computing/02:_Introduction_to_Information_Systems/2.01:_Information_Systems
  3. eng.libretexts.org eng.libretexts.org
    2.3: Components of an Information System
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    1. zbah1967 09 Sep 2025
      Process

      I don't really understand this process part. Is this just the business part of tech? What does it really have to do with computers in a whole.

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    eng.libretexts.org/Courses/Prince_Georges_Community_College/INT_1010:_Concepts_in_Computing/02:_Introduction_to_Information_Systems/2.03:_Components_of_an_Information_System