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The last Pioneer calculators based on the Saturn CPU ceased production in 2003, although versions of the HP-10B and HP-17B calculators based on newer hardware continue to be produced. Pages in category "HP Pioneer series calculators"
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Pioneer 6, 7, 8, and 9 were space probes in the Pioneer program, launched between 1965 and 1969. They were a series of solar-orbiting, spin-stabilized, solar cell- and battery-powered satellites designed to obtain measurements on a continuing basis of interplanetary phenomena from widely separated points in space. [ 5 ]
A split-phase or single-phase three-wire system is a type of single-phase electric power distribution. It is the alternating current (AC) equivalent of the original Edison Machine Works three-wire direct-current system.
A 1951 USAF resolution test chart is a microscopic optical resolution test device originally defined by the U.S. Air Force MIL-STD-150A standard of 1951. The design provides numerous small target shapes exhibiting a stepped assortment of precise spatial frequency specimens.
Pioneer Hi-Bred International, Inc. is a U.S.-based producer of seeds for agriculture. It is a major producer of genetically modified crops with insect and herbicide resistance . As of 2019, Pioneer is a wholly owned subsidiary of Corteva Agriscience .
Equalization practice for electrical recordings dates to the beginning of the art. In 1926, Joseph P. Maxwell and Henry C. Harrison from Bell Telephone Laboratories disclosed that the recording pattern of the Western Electric "rubber line" magnetic disc cutter had a constant-velocity characteristic. This meant that as frequency increased in the ...