The mechanical computer that included mechanisms that provided memory and an arithmetic processing unit was the difference engine.
Established in the year 1822, the difference engine was formed as a mechanical calculator which along with performing arithmetic functions could also provide memory. This stored data could be printed out if needed.
The difference engine was established by Charles Babbage. The difference engine also had the potential to do a series of calculations to solve a difficult arithmetical problem.
The difference engine worked on the principle of repeated additions to solve a problem. The formation of this mechanical computer was the beginning of the revolution in the computers that we see today. It was the basis following which the revolution in the technology industry began.
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