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  2. Multi-Drop Bus / Internal Communication Protocol - Wikipedia

    en.wikipedia.org/wiki/Multi-Drop_Bus_/_Internal...

    The multidrop bus used by vending machine controllers to communicate with the vending machine's components, such as a currency detector, is also called MDB (for Multi-Drop Bus). In use since the 1980s, it is now an open standard of the National Automatic Merchandising Association, or NAMA. The devices communicate in a single-master, multiple ...

  3. DEX (protocol) - Wikipedia

    en.wikipedia.org/wiki/DEX_(protocol)

    DEX (protocol) DEX (data exchange) is a format for collecting audit and event data from vending machines . DEX was introduced in the late 1980s by bottlers who provided product to vending machines. It was intended to improve auditing of vending machines, simplify inventory management. DEX records cash in/out, product movement and other audit data.

  4. Low-level programming language - Wikipedia

    en.wikipedia.org/wiki/Low-level_programming_language

    Low-level programming language. A low-level programming language is a programming language that provides little or no abstraction from a computer's instruction set architecture —commands or functions in the language map that are structurally similar to processor's instructions. Generally, this refers to either machine code or assembly language.

  5. Multidrop bus - Wikipedia

    en.wikipedia.org/wiki/Multidrop_bus

    Multidrop bus. A multidrop bus (MDB) is a computer bus in which all components are connected to the electrical circuit. A process of arbitration determines which device sends information at any point. The other devices listen for the data they are intended to receive. Multidrop buses have the advantage of simplicity and extensibility, but their ...

  6. Ticket machine - Wikipedia

    en.wikipedia.org/wiki/Ticket_machine

    A ticket machine, also known as a ticket vending machine (TVM), is a vending machine that produces paper or electronic tickets, or recharges a stored-value card or smart card or the user's mobile wallet, typically on a smartphone. For instance, ticket machines dispense train tickets at railway stations, transit tickets at metro stations and ...

  7. Hume (programming language) - Wikipedia

    en.wikipedia.org/wiki/Hume_(programming_language)

    Hume is a functionally based programming language developed at the University of St Andrews and Heriot-Watt University in Scotland since the year 2000. The language name is both an acronym meaning 'Higher-order Unified Meta-Environment' and an honorific to the 18th-century philosopher David Hume. It targets real-time computing embedded systems ...

  8. Finite-state machine - Wikipedia

    en.wikipedia.org/wiki/Finite-state_machine

    A finite-state machine ( FSM) or finite-state automaton ( FSA, plural: automata ), finite automaton, or simply a state machine, is a mathematical model of computation. It is an abstract machine that can be in exactly one of a finite number of states at any given time. The FSM can change from one state to another in response to some inputs; the ...

  9. Amid safety concerns, Metro begins Tap-to-Exit pilot program

    www.aol.com/news/amid-safety-concerns-metro...

    LOS ANGELES - In an effort to boost safety on train lines, Metro formally rolled out a pilot program Tuesday in North Hollywood that requires passengers to tap their fare card to exit the subway ...