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Many magazines and newspapers today rely on desktop publishing software. Businesses use it to produce professional-looking newsletters, reports, and brochures-both to improve internal communication and to make a better impression on the outside world. Generally speaking, software can be categorized as system software or applications software. A subset of system software is an operating system, the underlying software found on all computers. Applications software, software that is applied, can be used to solve a particular problem or to perform a particular task. Based on Charles Babbage's second design for a mechanical calculating engine, a team at the Science Museum in London sets out to prove that the design would have worked as planned. Led by curator Doron Swade the team built Babbage’s machine in six years, using techniques that would have been available to Babbage at the time, proving that Babbage’s design was accurate and that it could have been built in his day. Intel re