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  2. Clock rate - Wikipedia

    en.wikipedia.org/wiki/Clock_rate

    The first fully mechanical digital computer, the Z1, operated at 1 Hz (cycle per second) clock frequency and the first electromechanical general purpose computer, the Z3, operated at a frequency of about 5–10 Hz. The first electronic general purpose computer, the ENIAC, used a 100 kHz clock in its cycling unit. As each instruction took 20 ...

  3. Variable refresh rate - Wikipedia

    en.wikipedia.org/wiki/Variable_refresh_rate

    On displays with a fixed refresh rate, a frame can only be shown on the screen at specific intervals, evenly spaced apart. If a new frame is not ready when that interval arrives, then the old frame is held on screen until the next interval (stutter) or a mixture of the old frame and the completed part of the new frame is shown ().

  4. Computer performance - Wikipedia

    en.wikipedia.org/wiki/Computer_performance

    In computing, computer performance is the amount of useful work accomplished by a computer system. Outside of specific contexts, computer performance is estimated in terms of accuracy, efficiency and speed of executing computer program instructions. When it comes to high computer performance, one or more of the following factors might be involved:

  5. Refresh rate - Wikipedia

    en.wikipedia.org/wiki/Refresh_rate

    This gif animation shows a rudimentary comparison of how motion varies with 4 Hz, 12 Hz, and 24 Hz refresh rates. Entire sequence has a frame rate of 24 Hz. [6] The development of televisions in the 1930s was determined by a number of technical limitations. The AC power line frequency was used for the vertical refresh rate for two reasons. The ...

  6. Computer performance by orders of magnitude - Wikipedia

    en.wikipedia.org/wiki/Computer_performance_by...

    1.8×10 1: ENIAC, first programmable electronic digital computer, 1945 [2] 5×10 1: upper end of serialized human perception computation (light bulbs do not flicker to the human observer) 7×10 1: Whirlwind I 1951 vacuum tube computer and IBM 1620 1959 transistorized scientific minicomputer [2]

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  8. Missing emails? How to find and check your spam folder

    www.aol.com/lifestyle/missing-emails-check-spam...

    Digital junk mail is just like the unwanted coupons, flyers and other stuff you get in your mailbox, except your spam folder is separate from your main email inbox — so if you never check it and ...

  9. List of computer display standards - Wikipedia

    en.wikipedia.org/wiki/List_of_computer_display...

    Various computer display standards or display modes have been used in the history of the personal computer. They are often a combination of aspect ratio (specified as width-to-height ratio), display resolution (specified as the width and height in pixels), color depth (measured in bits per pixel), and refresh rate (expressed in hertz ...

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