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  2. iMessage - Wikipedia

    en.wikipedia.org/wiki/IMessage

    iMessage. iMessage is an instant messaging service developed by Apple Inc. and launched in 2011. iMessage functions exclusively on Apple platforms – including macOS, iOS, iPadOS, and watchOS – as part of Apple's approach to inter-device integration, which has been described by media outlets as a means of achieving vendor lock-in. [1] [2] [3 ...

  3. Psi (instant messaging client) - Wikipedia

    en.wikipedia.org/wiki/Psi_(instant_messaging_client)

    Psi is a free instant messaging client for the XMPP protocol (including such services as Google Talk) which uses the Qt toolkit. It runs on Linux (and other Unix-like operating systems), Windows, macOS and OS/2 (including eComStation and ArcaOS). User interface of program is very flexible in customization.

  4. Gerald Jay Sussman - Wikipedia

    en.wikipedia.org/wiki/Gerald_Jay_Sussman

    Expressing the methods in a computer language forces them to be unambiguous and computationally effective. Students are expected to read the programs and to extend them and to write new ones. The task of formulating a method as a computer-executable program and debugging that program is a powerful exercise in the learning process.

  5. GE HealthCare - Wikipedia

    en.wikipedia.org/wiki/GE_HealthCare

    GE HealthCare Technologies, Inc. [5] is an American multinational medical technology company headquartered in Chicago, Illinois. [6] It was spun-off from General Electric on January 4, 2023, with GE retaining 6.7%. As of 2017, it is a manufacturer and distributor of diagnostic imaging agents and radiopharmaceuticals for imaging modalities used ...

  6. Message Handling System - Wikipedia

    en.wikipedia.org/wiki/Message_Handling_System

    Message Handling System (MHS) is an important early email protocol developed by Action Technologies, Inc. (ATI) in 1986. Novell licensed it in 1988 then later bought it.

  7. Interrupt request - Wikipedia

    en.wikipedia.org/wiki/Interrupt_request

    Interrupt request. In a computer, an interrupt request (or IRQ) is a hardware signal sent to the processor that temporarily stops a running program and allows a special program, an interrupt handler, to run instead. Hardware interrupts are used to handle events such as receiving data from a modem or network card, key presses, or mouse movements.

  8. Text messaging - Wikipedia

    en.wikipedia.org/wiki/Text_messaging

    The word "lol" sent via iMessage. Text messaging, or texting, is the act of composing and sending electronic messages, typically consisting of alphabetic and numeric characters, between two or more users of mobile devices, desktops / laptops, or another type of compatible computer. Text messages may be sent over a cellular network or may also ...

  9. Software - Wikipedia

    en.wikipedia.org/wiki/Software

    The application software layer interfaces with the operating system, which in turn communicates with the hardware. The arrows indicate information flow. Software is a collection of programs and data that tell a computer how to perform specific tasks. Software often includes associated software documentation. [1]