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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. Open Location Code - Wikipedia

    en.wikipedia.org/wiki/Open_Location_Code

    The Open Location Code (OLC) is a geocode based on a system of regular grids for identifying an area anywhere on the Earth. [1] It was developed at Google's Zürich engineering office, [2] and released late October 2014. [3] Location codes created by the OLC system are referred to as "plus codes".

  4. List of United States INCITS codes by county - Wikipedia

    en.wikipedia.org/wiki/List_of_United_States...

    The following sortable table lists the 3252 counties and county equivalents of the United States and their respective INCITS (38+31) codes. (Formerly FIPS county codes ). Table

  5. 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 ...

  6. How to Decode the Tiny Stickers on Grocery Store Fruits and ...

    www.aol.com/decode-tiny-stickers-grocery-store...

    Each code, typically four or five digits long, offers information about the item's category (i.e., if it's a banana, an apple, or a peach), if it's organic or conventionally grown, and potentially ...

  7. List of North American Numbering Plan area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_North_American...

    Each NPA is identified by one or more numbering plan area codes (NPA codes, or area codes), consisting of three digits that are prefixed to each local telephone number having seven digits. A numbering plan area with multiple area codes is called an overlay. Area codes are also assigned for non-geographic purposes.

  8. District of Columbia Protective Services Division - Wikipedia

    en.wikipedia.org/wiki/District_of_Columbia...

    Since, PSD officers are government employees with the authority to make full custodial arrests; the officers are "qualified law enforcement officers" as defined in the Law Enforcement Officers Safety Act, and can therefore carry concealed firearms while off-duty anywhere in the United States without regard to local and state laws.

  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.