Q: What is the oldest calculator?

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The oldest calculator, the abacus, was invented in ancient Egypt(unknown date). The first Mechanical calculator, known as the Calculating clock, was invented by Willhelm Schickard in 1623. The first electronic desktop calculator were announced by the Bell Punch Co, in Uxbridge England in 1961. Finally, the first handheld computer was invented in 1980.

CALCULATOR

A scientific calculator.

If you have a computer, you already have the calculator that is part of the computer's program.

Buy a good calculator.

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The oldest calculator, the abacus, was invented in ancient Egypt(unknown date). The first Mechanical calculator, known as the Calculating clock, was invented by Willhelm Schickard in 1623. The first electronic desktop calculator were announced by the Bell Punch Co, in Uxbridge England in 1961. Finally, the first handheld computer was invented in 1980.

A Texas Instruments graphing calculator can be used as a basic calculator, a scientific calculator and a graphing calculator.

pocket calculator is a calculator that we keep in our pocket

Yes for the calculator active but not for the calculator inactive.

fitness calculator

difference between present day calculator and leibniz calculator

On normal calculator, press 'Off'. If your calculator doesn't have this button, the calculator will turn off automatically after some time. On scientific calculator, press 'shift' and press 'AC'. (depends on your version of the calculator)

Both Windows and Apple computers come with a free calculator. The Windows calculator also includes a scientific calculator and programmer's calculator.

Footprint calculator can be carbon footprint calculator or ecological footprint calculator, which can give data about your impact on environment.

solar calculator

you can find a calculator in a calculator store that have technpology