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2. Real-time clock - Wikipedia

   en.wikipedia.org/wiki/Real-time_clock

   A real-time clock ( RTC) is an electronic device (most often in the form of an integrated circuit) that measures the passage of time. Although the term often refers to the devices in personal computers, servers and embedded systems, RTCs are present in almost any electronic device which needs to keep accurate time of day .

3. Real-time computing - Wikipedia

   en.wikipedia.org/wiki/Real-time_computing

   Real-time computing. Real-time computing ( RTC) is the computer science term for hardware and software systems subject to a "real-time constraint", for example from event to system response. [1] Real-time programs must guarantee response within specified time constraints, often referred to as "deadlines". [2]

4. Real-time - Wikipedia

   en.wikipedia.org/wiki/Real-time

   Real-time computing, hardware and software systems subject to a specified time constraint. Real-time clock, a computer clock that keeps track of the current time. Real-time Control System, a reference model architecture suitable for software-intensive, real-time computing. Real-time Programming Language, a compiled database programming language ...

5. Elapsed real time - Wikipedia

   en.wikipedia.org/wiki/Elapsed_real_time

   In computing, elapsed real time, real time, wall-clock time, wall time, or walltime is the actual time taken from the start of a computer program to the end. In other words, it is the difference between the time at which a task finishes and the time at which the task started. Wall time is thus different from CPU time, which measures only the ...

6. Real-time operating system - Wikipedia

   en.wikipedia.org/wiki/Real-time_operating_system

   A real-time operating system ( RTOS) is an operating system (OS) for real-time computing applications that processes data and events that have critically defined time constraints. An RTOS is distinct from a time-sharing operating system, such as Unix, which manages the sharing of system resources with a scheduler, data buffers, or fixed task ...

7. Apple II system clocks - Wikipedia

   en.wikipedia.org/wiki/Apple_II_system_clocks

   The No-Slot Clock, also known as the Dallas Smartwatch (DS1216E), [1] was a 28-pin chip -like device that could be used directly in any Apple II or Apple II compatible with a 28-pin ROM. Dallas Semiconductor produced the device as an easy implementation for a real-time clock for a variety of applications. The clock was powered by an embedded ...