Sir Clive Sinclair
The first adding calculator machine was invented by Blaise Pascal.
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 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.
Because it was the first portable counting device - sort of the first 'pocket' calculator !
The first pocket calculator is called theCurta. More:The inventors name is Clif Stoll.
pocket calculator is a calculator that we keep in our pocket
The first calculator dates back to 2700 BC with the invention of the Abacus, invented in Mesopotamia.In the 1940's and 1950's, the first mainframe computers were invented, which led towards the hand-held calculators we know today.In the mid-1960's, desktop calculators were coming to fruition, and in 1970, the first "Pocket" calculator was invented in Japan by Sanyo, called the ICC 0081.
No. The Romans invented the first 'pocket' calculator, a bronze pocket abacus. Look at http://www.hh.schule.de/metalltechnik-didaktik/users/luetjens/abakus/rom-abakus-en.htm
who invented the first mechanical digital calculator
The Slide Rule
The first adding calculator machine was invented by Blaise Pascal.
He built the first pocket calculator
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 calculator was invented in 1623.
I saw the first modern electronic pocket calculator in 1967 when I was attending engineering school at the University of California in Berkeley. It was made by Hewlett-Packard.
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