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  2. Position sensitive device - Wikipedia

    en.wikipedia.org/wiki/Position_sensitive_device

    2-D tetra-lateral position sensitive device (PSD) A 2-D tetra-lateral PSD is capable of providing continuous position measurement of the incident light spot in 2-D. It consists of a single square PIN diode with a resistive layer. When there is an incident light on the active area of the sensor, photocurrents are generated and collected from ...

  3. List of file signatures - Wikipedia

    en.wikipedia.org/wiki/List_of_file_signatures

    In the table below, the column "ISO 8859-1" shows how the file signature appears when interpreted as text in the common ISO 8859-1 encoding, with unprintable characters represented as the control code abbreviation or symbol, or codepage 1252 character where available, or a box otherwise. In some cases the space character is shown as ␠.

  4. Security detail - Wikipedia

    en.wikipedia.org/wiki/Security_detail

    A security detail, often known as a PSD (protective services detail, personal security detachment, personal security detail) or PPD (personal protection detail), is a protective team assigned to protect the personal security of an individual or group. PSDs can be made up of multiple federal and state government organisations, military personnel ...

  5. List of military headstamps - Wikipedia

    en.wikipedia.org/wiki/List_of_military_headstamps

    The headstamp has a two-letter manufacturer code (10- and 2-o'clock) and the lot code (rather than the year) is the number 40 (at 4 o'clock) followed by a third numeral (at 8 o'clock). [4] Collectors allege that the cartridges were intended to be aid to anti-Communist insurgents and Allied forces equipped with US weapons.

  6. PSD - Wikipedia

    en.wikipedia.org/wiki/PSD

    PSD (rapper), a Californian rapper and hip-hop producer; Port Said Airport, Egypt (IATA code PSD) Private Sector Development, term used in international development; PSD Bank, German banking group; Patricia Street Deli, a famous sandwich and soup restaurant located in the tourist town of Jasper, Alberta, Canada

  7. Federal Information Processing Standard state code - Wikipedia

    en.wikipedia.org/wiki/Federal_Information...

    The codes were assigned by NIST and each uniquely identified a state, the District of Columbia, or an outlying area of the U.S. These codes were used by the U.S. Census Bureau, the Department of Agriculture to form milk-processing plant numbers, some cash registers during check approval, and in the Emergency Alert System (EAS).

  8. Payment Services Directive - Wikipedia

    en.wikipedia.org/wiki/Payment_Services_Directive

    The PSD contained two main sections: The "market rules" described which type of organisations could provide payment services. Next to credit institutions (i.e. banks) and certain authorities (e.g. central banks, government bodies), the PSD mentioned electronic money institutions (EMI), created by the E-Money Directive in 2000, and created the new category of "payment institutions" (PI) with ...

  9. Program-associated data - Wikipedia

    en.wikipedia.org/wiki/Program-associated_data

    Program Associated Data (PAD) or Program Service Data (PSD) is the data displayed on many HD Radio and satellite radio receivers. [1] It can describe the program being transmitted and other information such as the name of the song, the artist and the genre of music.