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Everything about High Precision Event Timer

Hardware timer used in personal computers

The High Precision Event Timer (HPET) is a hardware timer available in modern x86-compatible personal computers. Compared to older types of timers available in the x86 architecture, HPET allows more efficient processing of highly timing-sensitive applications, such as multimedia playback and OS task switching. It was developed jointly by Intel and Microsoft and has been incorporated in PC chipsets since 2005. Formerly referred to by Intel as a Multimedia Timer, the term HPET was selected to avoid confusion with the software multimedia timers introduced in the MultiMedia Extensions to Windows 3.0. Wikipedia →

đź§­ Start here: a 6-step reading path

  1. Read the overview: High Precision Event TimerA 5-minute orientation
  2. Pick up a classic book: TechThe most-reprinted book on the subject
  3. Read the landmark paper: Jitter Measurement on the Basis of High-Precision Event TimerCited 2 times
  4. Go sideways: Time Stamp CounterA closely related topic
  5. Go sideways: Programmable interval timerA closely related topic

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