The calculator was designed based on the use of many pre-electronic models, such as the Abacus which can be traced back to 2700 BC, and the Mechanical Calculator (designed by Wilhelm Schickard) in the early 1600s. In 1957 the Casio Computer Company created the first electronic calculator, out of Japan.
william seward burroughs
pascal
French Physicist, Mathematician and Philosopher Blaise Pascal invented the first mechanical calculator.
I still consider Pascal (mechanic calculator) as the inventor. Eniac (1945) was perhaps the initial real computer.
the person who invented it was Hugo Caisaguano
You may be referring to the Curta, the small, hand-cranked mechanical calculator introduced by Curt Herzstark in 1948. It can be used to perform addition, subtraction, multiplication, division, square roots and other operations. It was considered the most accurate calculator until the introduction of the electronic ones in the early 1970s.
Leonardo da Vinci (April 15, 1452 - May 2, 1519) was an Italian painter and sculptor. He was also an inventor. Five hundred years ago he left notes and drawings with ideas for a helicopter, a tank, concentrated solar power, a mechanical calculator and the double hull.
who is the inventor
Inventor
an accidental inventor is a inventor that always makes accidents
an inventor is a designer but a designer is not an inventor
There is no headache inventor.