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41Timeline of jet power — This article outlines some of the important developments in the early history of the development of the jet engine. Although the most common type, the gas turbine powered jet engine, was certainly a 20th century invention, many of the needed… …
42History of printing — The history of printing began as an attempt to make easier and reduce the cost of reproducing multiple copies of documents, fabrics, wall papers and so on. Printing streamlined the process of communication, and contributed to the development of… …
43TARDIS — The TARDIS used from 2005 to 2010 on display at BBC Television Centre …
44Calculator — For mechanical precursors to the modern calculator, see mechanical calculator. For other uses, see Calculator (disambiguation). An electronic pocket calculator with a 7‑segment LCD display, that can perform basic arithmetic operations …
45Palm OS — Infobox OS name = Palm OS (Garnet OS) caption = A typical Palm OS display. developer = Palm, Inc., ACCESS (Garnet OS) source model = Closed source kernel type = supported platforms = ui = family = Palm OS released = 1996 latest release version =… …
46Maglev (transport) — MAGLEV, or magnetic levitation, is a system of transportation that suspends, guides and (usually) propels vehicles, predominantly trains, using magnetic forces. This method has the potential to be faster, quieter and smoother than wheeled mass… …
47Cell architecture — Cell architectureConstituent elements*PPE *SPE *EIB *XDR *FLEX I/OPatents It is well known that IBM holds one of the world s largest patent portfolios. The United States Patent and Trademark Office proclaimed in 2004, For the twelfth consecutive… …
48Maglev — JR Maglev at Yamanashi, Japan test track in November 2005 …
49Mono (software) — This article is about the computing platform. For other uses, see Mono (disambiguation). Mono Developer(s) Xamarin (formerly by Novell and originally by Ximian) and the Mono community …
50Diesel locomotive — Three styles of diesel locomotive body: cab unit, hood unit and box cab. These locomotives are operated by Pacific National in Australia …
