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  2. Pneumatic circuit - Wikipedia

    en.wikipedia.org/wiki/Pneumatic_circuit

    The normally closed valves will not permit flow from the inlet port of the valve to the outlet port, normally the flow will be permitted only by changing the position of the valve. In general, valves are designated as 2/2 DCV, 3/2 DCV, 5/2 DCV, 5/3 DCV etc., in which the first number indicates number of ports and second number indicates number ...

  3. AVR microcontrollers - Wikipedia

    en.wikipedia.org/wiki/AVR_microcontrollers

    8-bit AVR XMEGA devices via the PDI 2-wire interface; 8-bit megaAVR and tinyAVR devices via SPI for all with OCD (on-chip debugger) support; 8-bit tinyAVR microcontrollers with TPI support; 32-bit SAM Arm Cortex-M based microcontrollers via SWD; Target operating voltage ranges of 1.62V to 5.5V are supported as well as the following clock ranges:

  4. Camless piston engine - Wikipedia

    en.wikipedia.org/wiki/Camless_piston_engine

    Camless valve trains have long been investigated by several companies, including Renault, BMW, Fiat, Valeo, General Motors, Ricardo, Lotus Engineering who developed electro-hydraulic valve actuation in the late 1980s as a spinoff of their active suspension program (both utilised similar electro-hydraulic actuation and control), Ford, Jiangsu Gongda Power Technologies, and Koenigsegg's sister ...

  5. Butterworth filter - Wikipedia

    en.wikipedia.org/wiki/Butterworth_filter

    Butterworth had a reputation for solving very complex mathematical problems thought to be 'impossible'. At the time, filter design required a considerable amount of designer experience due to limitations of the theory then in use.

  6. Butterfly effect - Wikipedia

    en.wikipedia.org/wiki/Butterfly_effect

    A plot of Lorenz' strange attractor for values ρ=28, σ = 10, β = 8/3. The butterfly effect or sensitive dependence on initial conditions is the property of a dynamical system that, starting from any of various arbitrarily close alternative initial conditions on the attractor, the iterated points will become arbitrarily spread out from each other.