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  2. Master keying - Wikipedia

    en.wikipedia.org/wiki/Master_keying

    For example, master keyed pin tumbler locks often have two shear points at each pin position, one for the change key and one for the master key. A far more secure (and more expensive) system has two cylinders in each lock, one for the change key and one for the master key. Master keyed lock systems generally reduce overall security. [2]

  3. Supplemental type certificate - Wikipedia

    en.wikipedia.org/wiki/Supplemental_type_certificate

    A supplemental type certificate (STC) is a civil aviation authority-approved major modification or repair to an existing type certified aircraft, engine or propeller. As it adds to the existing type certificate , it is deemed "supplemental".

  4. St. Cloud Regional Airport - Wikipedia

    en.wikipedia.org/wiki/St._Cloud_Regional_Airport

    St. Cloud Regional Airport (IATA: STC, ICAO: KSTC, FAA LID: STC) is a public-use airport in Sherburne County, Minnesota, United States, and owned by the St. Cloud Regional Airport Authority. [2] It is located four nautical miles (5 mi , 7 km ) east of the central business district of the City of St.Cloud The airport serves private, commercial ...

  5. Conveyor chain - Wikipedia

    en.wikipedia.org/wiki/Conveyor_Chain

    2. Solid bearing pin chain. Solid bearing pin chain has the same dimensions as hollow bearing pin chain but is more robust and thus suitable for more arduous conveyor applications. 3. Deep link chain. Deep link chain has deeper side plates than the normal chain plates and so provides a continuous carrying edge above the roller periphery.

  6. Stanley Black & Decker - Wikipedia

    en.wikipedia.org/wiki/Stanley_Black_&_Decker

    Stanley Black & Decker, Inc., formerly known as The Stanley Works, is a Fortune 500 American manufacturer of industrial tools and household hardware, and a provider of security products.

  7. Scan chain - Wikipedia

    en.wikipedia.org/wiki/Scan_chain

    Scan chain is a technique used in design for testing. The objective is to make testing easier by providing a simple way to set and observe every flip-flop in an IC. The basic structure of scan include the following set of signals in order to control and observe the scan mechanism. Scan_in and scan_out define the input and output of a scan chain.

  8. Sensitivity time control - Wikipedia

    en.wikipedia.org/wiki/Sensitivity_Time_Control

    Sensitivity time control (STC), also known as swept-gain control, is a system used to attenuate the very strong signals returned from nearby ground clutter targets in the first few range gates of a radar receiver. Without this attenuation, the receiver would routinely saturate due to the strong signals. This is used in air traffic control ...

  9. Space–time code - Wikipedia

    en.wikipedia.org/wiki/Space–time_code

    A space–time code (STC) is a method employed to improve the reliability of data transmission in wireless communication systems using multiple transmit antennas. STCs rely on transmitting multiple, redundant copies of a data stream to the receiver in the hope that at least some of them may survive the physical path between transmission and ...