In the ninth century, the Chinese used an abacus to calculate numbers. It used beads strung on sticks to manually add.
French mathematician Blaise Pascal invented an adding machine in 1642 that used gears to add numbers.
The first successful adding machine was invented in 1886 by William Burroughs; it cost $475.
The first handheld calculator was invented by Texas Instruments in 1966.
who invented the first mechanical digital calculator
The first calculator is believed to have been invented in North Africa, however China invented the spoon and the compass.
The introduction of the 1st mechanical calculator was invented in Europe. This type of calculator production then spread world wide. The first ever was invented by Willhelm Schickard.
The first adding calculator machine was invented by Blaise Pascal.
Japan ;)
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The first calculator was invented in 1623.
The first modern-style electronic calculator was invented in the 1960s. The first counting device, an abacus, was invented in Egypt in about 2000 BCE. The mechanical calculator was developed in the 17th century.
Pascal,a great French Scientist invented the calculator.
calculator and human computers used them.
Blaise Pascal
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