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Processor read/write scratch memory (called CALL STORE) was implemented using a magnetic core variant called Ferrite Sheet. Program and Data Store (used to store Software and infrequently changed data) was implemented using a technology called piggy back twistor - in modern parlance a write once, read many times non-volatile memory system).
The North County Transit District (NCTD) is the agency responsible for public transportation in Northern San Diego County, California.The agency manages the COASTER commuter rail service between Oceanside and San Diego, the SPRINTER hybrid rail service between Escondido and Oceanside, the BREEZE transit bus service, LIFT paratransit service, and FLEX on-demand and point-deviation service.
The Flexity Outlook is the latest model of streetcar in the rolling stock of the Toronto streetcar system owned by the Toronto Transit Commission (TTC). Based on the Bombardier Flexity, they were first ordered in 2009 and were built by Bombardier Transportation in Thunder Bay and Kingston, Ontario, with specific modifications for Toronto, such as unidirectional operation and the ability to ...
ABB Group [6] is a Swedish-Swiss [7] [8] [9] multinational electrical engineering corporation. Incorporated in Switzerland as ABB Ltd., and headquartered in Zurich, [1] it is dual-listed on the SIX Swiss Exchange in Zurich and the Nasdaq Nordic exchange in Stockholm, Sweden, in addition to OTC Markets Group's pink sheets in the United States. [10]
The Capitol Corridor and San Joaquins share a combined fleet of 13 EMD F59PHI and ten Siemens Charger SC-44 locomotives. [36] The Charger locomotives meet EPA Tier IV emission standards and are capable of operating at 125 mph in revenue service. [36] Many of the F59PHI have been re-engined to meet more stringent EPA Tier II emission standards. [37]
The British Rail Class 323 is a class of electric multiple unit (EMU) passenger train built by Hunslet Transportation Projects and Holec. All 43 units were built from 1992 through to 1995, [5] although mockups and prototypes were built and tested in 1990 and 1991.
In the same year as the discovery of X-rays, Mihajlo Idvorski Pupin (1858-1935) invented the method of placing a sheet of paper coated with fluorescent substances on the photographic plate, drastically reducing the exposure time and thus the radiation exposure. 95% of the film was blackened by the intensifying film and only the remaining 5% was ...