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Lockheed SR-71. The Pratt & Whitney J58 (company designation JT11D-20) is an American jet engine that powered the Lockheed A-12, and subsequently the YF-12 and the SR-71 aircraft. It was an afterburning turbojet engine with a unique compressor bleed to the afterburner that gave increased thrust at high speeds. Because of the wide speed range of ...
The Sinclair ZX80 is a home computer launched on 29 January 1980 [2] by Science of Cambridge Ltd. (later to be better known as Sinclair Research ). It is notable for being one of the first computers available in the United Kingdom for less than a hundred pounds. It was available in kit form for £79.95, where purchasers had to assemble and ...