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  2. 555 timer IC - Wikipedia

    en.wikipedia.org/wiki/555_timer_IC

    In 1972, Signetics originally released the 555 timer in DIP-8 and TO5-8 metal can packages, and the 556 timer was released in a DIP-14 package. [ 4 ] In 2006, the dual 556 timer was available in through-hole packages as DIP-14 (2.54 mm pitch), [ 21 ] and surface-mount packages as SO-14 (1.27 mm pitch) and SSOP-14 (0.65 mm pitch).

  3. Tarbell Cassette Interface - Wikipedia

    en.wikipedia.org/wiki/Tarbell_Cassette_Interface

    This is accomplished by reading a byte into a shift register which is periodically triggered by a 555 timer. Although the system can be run at any audible frequency, it is normally set to 3,000 Hz. As each data bit requires two output bits, the effective data rate is 1,500 bits per second, or 187 bytes per second.

  4. File:PWM-using-555-Timer-Circuit-Diagram.webp - Wikipedia

    en.wikipedia.org/wiki/File:PWM-using-555-Timer...

    What links here; Upload file; Special pages; Printable version; Page information

  5. Clock rate - Wikipedia

    en.wikipedia.org/wiki/Clock_rate

    It is measured in the SI unit of frequency hertz (Hz). The clock rate of the first generation of computers was measured in hertz or kilohertz (kHz), the first personal computers (PCs) to arrive throughout the 1970s and 1980s had clock rates measured in megahertz (MHz), and in the 21st century the speed of modern CPUs is commonly advertised in ...

  6. Duty cycle - Wikipedia

    en.wikipedia.org/wiki/Duty_cycle

    In electronic music, music synthesizers vary the duty cycle of their audio-frequency oscillators to obtain a subtle effect on the tone colors. This technique is known as pulse-width modulation. In the printer / copier industry, the duty cycle specification refers to the rated throughput (that is, printed pages) of a device per month.

  7. File:555 Astable Diagram.svg - Wikipedia

    en.wikipedia.org/wiki/File:555_Astable_Diagram.svg

    Circuit diagram of a standard 555 Astable circuit. The design equations can be found here. Date: ... Timer 555; Usage on pt.wikipedia.org CI 555; Usage on uk ...

  8. Wealth strategies that used to be reserved for billionaires ...

    www.aol.com/wealth-strategies-used-reserved...

    Investment tactics often require big buy-ins and high fees. New tech is lowering the price of entry in fields like direct indexing and private markets.

  9. Frequency - Wikipedia

    en.wikipedia.org/wiki/Frequency

    Frequency (symbol f), most often measured in hertz (symbol: Hz), is the number of occurrences of a repeating event per unit of time. [1] It is also occasionally ...