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  2. System time - Wikipedia

    en.wikipedia.org/wiki/System_time

    System time. In computer science and computer programming, system time represents a computer system's notion of the passage of time. In this sense, time also includes the passing of days on the calendar. System time is measured by a system clock, which is typically implemented as a simple count of the number of ticks that have transpired since ...

  3. Unix time - Wikipedia

    en.wikipedia.org/wiki/Unix_time

    Unix time[a]is a date and time representation widely used in computing. It measures time by the number of non-leap secondsthat have elapsed since 00:00:00 UTCon 1 January 1970, the Unix epoch. In modern computing, values are sometimes stored with higher granularity, such as microsecondsor nanoseconds.

  4. Network Time Protocol - Wikipedia

    en.wikipedia.org/wiki/Network_Time_Protocol

    v. t. e. The Network Time Protocol (NTP) is a networking protocol for clock synchronization between computer systems over packet-switched, variable- latency data networks. In operation since before 1985, NTP is one of the oldest Internet protocols in current use. NTP was designed by David L. Mills of the University of Delaware.

  5. Health information technology - Wikipedia

    en.wikipedia.org/wiki/Health_information_technology

    Health information technology (HIT) is "the application of information processing involving both computer hardware and software that deals with the storage, retrieval, sharing, and use of health care information, health data, and knowledge for communication and decision making". [ 8 ] Technology is a broad concept that deals with a species ...

  6. CPU time - Wikipedia

    en.wikipedia.org/wiki/CPU_time

    CPU color time for program P1. CPU time (or process time) is the amount of time that a central processing unit (CPU) was used for processing instructions of a computer program or operating system. CPU time is measured in clock ticks or seconds. Sometimes it is useful to convert CPU time into a percentage of the CPU capacity, giving the CPU usage.

  7. Epoch (computing) - Wikipedia

    en.wikipedia.org/wiki/Epoch_(computing)

    Epoch (computing) In computing, an epoch is a fixed date and time used as a reference from which a computer measures system time. Most computer systems determine time as a number representing the seconds removed from a particular arbitrary date and time. For instance, Unix and POSIX measure time as the number of seconds that have passed since ...

  8. Clock rate - Wikipedia

    en.wikipedia.org/wiki/Clock_rate

    Clock rate. Microprocessor clock speed measures the number of pulses per second generated by an oscillator that sets the tempo for the processor. It is measured in hertz (pulses per second). In computing, the clock rate or clock speed typically refers to the frequency at which the clock generator of a processor can generate pulses, which are ...

  9. Health informatics - Wikipedia

    en.wikipedia.org/wiki/Health_informatics

    Medical informatics introduces information processing concepts and machinery to the domain of medicine. Health informatics is the study and implementation of computer structures and algorithms to improve communication, understanding, and management of medical information. [ 1 ] It can be viewed as a branch of engineering and applied science.