The Curta is a small, hand-held mechanical calculator invented by Curt Herzstark in the 1940s. It is known for its compact design, resembling a small cylindrical device, and was capable of performing addition, subtraction, multiplication, and division. The Curta used a system of gears and a rotary crank to input numbers and perform calculations. It was highly valued for its portability and precision, and was popular among engineers, scientists, and mathematicians in the mid-20th century. Although it was eventually replaced by electronic calculators, the Curta is considered a significant achievement in the development of mechanical computing devices.

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