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
Leibnitz's Multiplier
Differential Analyser
Pascal's Adder

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Computer Basic Information
Which of the following is true concerning personal computers?

The electronic spreadsheet has been a primary reason for their popularity
They decrease the demand for mainframe computers
They have been most successful in the home
Their future is not so bright owning to the improved cost-performance ratio of minis and mainframes
None of these

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