Computer Basic Information
What is the name of the earliest calculating machine which was based on concepts found in modern computers but was unfortunately never built?

None of these
Babbage's Difference Engine
Pascal's Adder
Leibnitz's Multiplier
Differential Analyser

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Computer Basic Information
What is the main difference between a mainframe and a super computer?

Super computer is much larger than mainframe computers.
Supercomputers are focused to execute as many programs as possible while mainframe uses its power to execute few programs as fast as possible.
None of these
Super computers are much smaller than mainframe computers.
Supercomputers are focused to execute few programs as fast as possible while mainframe uses its power to execute as many programs concurrently.

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