Curt Herzstark is recognized with developing a calculator that could be held in one hand in the year 1948. It had many larger, bulkier predecessors.
William Seward Burroughs invented the first practical calculator
the person who invented it was Hugo Caisaguano
who invented the first mechanical digital calculator
ENIAC was unveiled in February 1946. However UK specialists at Bletchley Park who were working on decoding the German armed forces ENIGMA traffic, built the first working computers. These were called Collosus and there were 10 working by the August 1945.
Robert Fulton invented the first practical steamboat.
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.
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Henry Ford invented the first affordable and practical automobile.
The Blaise Pascalâ??s calculator was invented in France during the early 17th century. Its primary usage is to be an adding machine which can be used to add and subtract two numbers. Blaise Pascal invented it with the help of Wilhelm Schickard
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.