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  2. Intel 8253 - Wikipedia

    en.wikipedia.org/wiki/Intel_8253

    This frequency, divided by 2 16 (the largest divisor the 8253 is capable of) produces the ≈18.2 Hz timer interrupt used in MS-DOS and related operating systems. In the original IBM PCs, Counter 0 is used to generate a timekeeping interrupt. Counter 1 is used to trigger the refresh of DRAM memory. Counter 2 is used to generate tones via the PC ...

  3. Programmable interval timer - Wikipedia

    en.wikipedia.org/wiki/Programmable_Interval_Timer

    The Intel 8253 PIT was the original timing device used on IBM PC compatibles.It used a 1.193182 MHz clock signal (one third of the color burst frequency used by NTSC, one twelfth of the system clock crystal oscillator, [1] therefore one quarter of the 4.77 MHz CPU clock) and contains three timers.

  4. Talk:Intel 8253 - Wikipedia

    en.wikipedia.org/wiki/Talk:Intel_8253

    The references to two timers is not true. In Intel ICH4 documentation, the timer exists in IO ports 40h..43h, and the same timer is aliased to IO ports 50h..53h for some reason. A very good guess would be that the original IBM PC had it like this too to simplify IO address decoding, but this is just a guess.

  5. PC speaker - Wikipedia

    en.wikipedia.org/wiki/PC_speaker

    The clock rate of the PC's programmable interval timer which drives the speaker is fixed at 1,193,180 Hz, [3] and the product of the audio sample rate times the maximum DAC value must equal this. Typically, a 6-bit DAC [ 8 ] with a maximum value of 63 is used at a sample rate of 18,939.4 Hz, producing poor but recognizable audio.

  6. Advanced Programmable Interrupt Controller - Wikipedia

    en.wikipedia.org/wiki/Advanced_Programmable...

    The aperiodic interrupts offered by the APIC timer are used by the Linux kernel tickless kernel feature. This optional but default feature is new with 2.6.18. When enabled on a computer with an APIC timer, the kernel does not use the 8253 programmable interval timer for timekeeping. [12]

  7. The Best Fintech Stock to Invest $1,000 in Right Now - AOL

    www.aol.com/best-fintech-stock-invest-1...

    According to a report from Boston Consulting Group and QED Investors, it could be worth $1.5 trillion by 2030 -- up from $245 billion in 2021. The fintech space is becoming increasingly ...

  8. AOL Mail for Verizon Customers - AOL Help

    help.aol.com/products/aol-mail-verizon

    AOL Mail welcomes Verizon customers to our safe and delightful email experience!

  9. Chocolate paired with tea has health benefits that outweigh wine

    www.aol.com/chocolate-paired-tea-health-benefits...

    William Mullan, brand director of Raaka Chocolate in Brooklyn, New York, told Fox News Digital that his company has been manufacturing chocolate tea bars in-house since 2014, with the debut of ...

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