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  2. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    PDF's emphasis on preserving the visual appearance of documents across different software and hardware platforms poses challenges to the conversion of PDF documents to other file formats and the targeted extraction of information, such as text, images, tables, bibliographic information, and document metadata. Numerous tools and source code ...

  3. Multi-touch - Wikipedia

    en.wikipedia.org/wiki/Multi-touch

    Multi-touch is commonly implemented using capacitive sensing technology in mobile devices and smart devices. A capacitive touchscreen typically consists of a capacitive touch sensor, application-specific integrated circuit (ASIC) controller and digital signal processor (DSP) fabricated from CMOS (complementary metal–oxide–semiconductor ...

  4. Pseudocapacitance - Wikipedia

    en.wikipedia.org/wiki/Pseudocapacitance

    Pseudocapacitive processes lead to a charge-dependent, linear capacitive behavior, as well as the accomplishment of non-faradaic double-layer capacitance in contrast to batteries, which have a nearly charge-independent behavior. The amount of pseudocapacitance depends on the surface area, material and structure of the electrodes.

  5. Capacitance–voltage profiling - Wikipedia

    en.wikipedia.org/wiki/Capacitance–voltage...

    Capacitance–voltage profiling (or C–V profiling, sometimes CV profiling) is a technique for characterizing semiconductor materials and devices. The applied voltage is varied, and the capacitance is measured and plotted as a function of voltage.

  6. Overlay control - Wikipedia

    en.wikipedia.org/wiki/Overlay_Control

    In silicon wafer manufacturing overlay control is the control of pattern-to-pattern alignment necessary in the manufacture of silicon wafers. Silicon wafers are currently manufactured in a sequence of steps, each stage placing a pattern of material on the wafer; in this way transistors , contacts, etc., all made of different materials, are laid ...

  7. PDF/UA - Wikipedia

    en.wikipedia.org/wiki/PDF/UA

    PDF/UA (PDF/Universal Accessibility), [1] formally ISO 14289, is an International Organization for Standardization (ISO) standard for accessible PDF technology. A technical specification intended for developers implementing PDF writing and processing software, PDF/UA provides definitive terms and requirements for accessibility in PDF documents and applications. [2]

  8. Glossary of electrical and electronics engineering - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_electrical_and...

    root mean square The root mean square value of a waveform is the DC value that corresponds to equivalent heating value. rotary converter An electric machine that converts electric power between two forms, say, AC and DC or single-phase and three phase, or between two different frequencies of AC (the latter two can be performed by the same machine).

  9. Differential capacitance - Wikipedia

    en.wikipedia.org/wiki/Differential_capacitance

    In electrochemistry differential capacitance is a parameter introduced for characterizing electrical double layers: = where σ is surface charge and ψ is electric surface potential.