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  2. The best sunrise alarm clocks of 2025 - AOL

    www.aol.com/lifestyle/best-sunrise-alarm-clocks...

    Best battery-powered sunrise alarm clock Lexon Mina Sunrise Alarm Clock. More options. $80 at Amazon $80 at Brookstone. ... The sunrise simulation duration is adjustable from 20-40 minutes. The ...

  3. Clock generator - Wikipedia

    en.wikipedia.org/wiki/Clock_generator

    Circuit diagram of a clock generator A desktop PC clock generator, based on the chip ICS 952018AF and 14.3 MHz resonator (on the left) A laptop PC clock generator, based on the Silego chip. A clock generator is an electronic oscillator that produces a clock signal for use in synchronizing a circuit's operation. The output clock signal can range ...

  4. Microelectromechanical system oscillator - Wikipedia

    en.wikipedia.org/wiki/Microelectromechanical...

    MEMS clock generators are useful in complex systems that require multiple frequencies, such as data servers and telecom switches. MEMS real-time clocks are used in systems that require precise time measurements. Smart meters for gas and electricity are an example that is consuming significant quantities of these devices.

  5. Crystal oscillator - Wikipedia

    en.wikipedia.org/wiki/Crystal_oscillator

    A crystal oscillator is an electronic oscillator circuit that uses a piezoelectric crystal as a frequency-selective element. [1] [2] [3] The oscillator frequency is often used to keep track of time, as in quartz wristwatches, to provide a stable clock signal for digital integrated circuits, and to stabilize frequencies for radio transmitters and receivers.

  6. I tried this battery-powered backup generator — it's great ...

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    I tried this battery-powered backup generator — it's great, and it's on sale (save $200) Rick Broida. January 10, 2023 at 11:33 AM.

  7. Zilog Z180 - Wikipedia

    en.wikipedia.org/wiki/Zilog_Z180

    It is also fully static (the clock can be halted and no data in the registers will be lost) [citation needed] and has a low EMI option that reduces the slew rate of the outputs. [ citation needed ] The Z80182 can operate at 33 MHz with an external oscillator for 5-volt operation, or at 20 MHz using the internal oscillator for 3.3-volt operation.

  8. Clock signal - Wikipedia

    en.wikipedia.org/wiki/Clock_signal

    A clock signal is produced by an electronic oscillator called a clock generator. The most common clock signal is in the form of a square wave with a 50% duty cycle. Circuits using the clock signal for synchronization may become active at either the rising edge, falling edge, or, in the case of double data rate, both in the rising and in the ...

  9. Quartz clock - Wikipedia

    en.wikipedia.org/wiki/Quartz_clock

    It is also possible for quartz clocks and watches to have their quartz crystal oscillate at a higher frequency than 32 768 (= 2 15) Hz (high frequency quartz movements [4]) and/or generate digital pulses more than once per second, to drive a stepping motor powered second hand at a higher power of 2 than once every second, [5] but the electric ...

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