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  2. Limit switch - Wikipedia

    en.wikipedia.org/wiki/Limit_switch

    In electrical engineering, a limit switch is a switch operated by the motion of a machine part or the presence of an object. A limit switch can be used for controlling machinery as part of a control system , as a safety interlock , or as a counter enumerating objects passing a point.

  3. Time switch - Wikipedia

    en.wikipedia.org/wiki/Time_switch

    A time switch (also called a timer switch, or simply timer) is a device that operates an electric switch controlled by a timer. Intermatic introduced its first time switch in 1945, which was used for "electric signs, store window lighting, apartment hall lights, stokers, and oil and gas burners." A consumer version was added in 1952.

  4. N2 chart - Wikipedia

    en.wikipedia.org/wiki/N2_Chart

    The N 2 diagram has been used extensively to develop data interfaces, primarily in the software areas. However, it can also be used to develop hardware interfaces. The basic N 2 chart is shown in Figure 2. The system functions are placed on the diagonal; the remainder of the squares in the N × N matrix represent the interface inputs and ...

  5. Omron - Wikipedia

    en.wikipedia.org/wiki/OMRON

    Omron was established by Kazuma Tateisi (立石一真) in 1933 (as the Tateisi Electric Manufacturing Company) and incorporated in 1948. The company originated in an area of Kyoto called "Omuro (御室) ", from which the name "Omron" was derived. Prior to 1990, the corporation was known as Omron Tateisi Electronics. During the 1980s and early ...

  6. Western Electric rules - Wikipedia

    en.wikipedia.org/wiki/Western_Electric_rules

    The Western Electric rules are decision rules in statistical process control for detecting out-of-control or non-random conditions on control charts. [1] Locations of the observations relative to the control chart control limits (typically at ±3 standard deviations) and centerline indicate whether the process in question should be investigated for assignable causes.

  7. Frequency divider - Wikipedia

    en.wikipedia.org/wiki/Frequency_divider

    For power-of-2 integer division, a simple binary counter can be used, clocked by the input signal. The least-significant output bit alternates at 1/2 the rate of the input clock, the next bit at 1/4 the rate, the third bit at 1/8 the rate, etc. An arrangement of flipflops is a classic method for integer-n division. Such division is frequency ...

  8. Memory timings - Wikipedia

    en.wikipedia.org/wiki/Memory_timings

    The time to read the first bit of memory from a DRAM without an active row is T RCD + CL. Row Precharge Time T RP: The minimum number of clock cycles required between issuing the precharge command and opening the next row. The time to read the first bit of memory from a DRAM with the wrong row open is T RP + T RCD + CL. Row Active Time T RAS

  9. Olympus OM-2 - Wikipedia

    en.wikipedia.org/wiki/Olympus_OM-2

    The Olympus OM-2 is an aperture-priority automatic-exposure camera (with full manual operation selected via switch), based on the earlier, successful Olympus OM-1 body. The OM-2 was introduced in 1975, [1] and combined the light, sturdy camera body style of the manual-only OM-1 with a new automatic exposure system.

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