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Computers might have built to facilitate operations for the military.  The original technology for computers was a lot more ancient than it is today. Originally, computers used punch cards to solve problems
Now they can be used for so many other purposes with simplified methods and programming.

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From firing tables to personal computers.

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From firing tables to personal computers.

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The world’s first general purpose computer, ENIAC (Electronic Numerical Integrator And Computer) was designed for the United States Military to calculate artillery firing tables. ENIAC was a heavy machine and weighed more 25 tons which covered 1,800 square feet of space.

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If ENIAC was heavier than Dinosaur and could execute less why wait to buy a personal computer which you can put on your lap to do the job for you. Computers are now cheaper. Take one for office, home and school.
Buy personal computer to save time and energy.