The calculator is a device that has been used for centuries to perform mathematical calculations. The first known calculator was the abacus, which was used by the ancient Egyptians and Babylonians. The abacus is a wooden frame with beads that are moved back and forth to represent numbers.
The first mechanical calculator was invented by Blaise Pascal in the early 1600s. Pascal’s calculator could only add and subtract, but it was a major improvement over the abacus. In 1642, Gottfried Wilhelm Leibniz invented a mechanical calculator that could also multiply and divide.
In 1876, Charles Babbage designed a machine called the Analytical Engine, which could perform any calculation that could be done by hand. However, the machine was never completed. In 1854, George Boole invented a system of logic that is now known as Boolean algebra. Boolean algebra was used in the design of digital computers.
In 1941, Konrad Zuse designed and built the first programmable computer. The first computers were large, expensive, and used vacuum tubes. In the 1950s, transistors were invented, and they replaced vacuum tubes in computers. Transistors are smaller, cheaper, and use less power than vacuum tubes.
In the 1970s, microprocessors were invented. A microprocessor is a chip that contains a complete computer on a single piece of silicon. The first microprocessor was the Intel 4004, which was used in calculators and other devices.
Today, calculators are used in a wide variety of devices, including computers, phones, and watches. Calculators are also used in many applications, such as engineering, finance, and science.
There are many different types of calculators, including scientific calculators, graphing calculators, and financial calculators. Scientific calculators are used to perform mathematical operations such as trigonometric functions and logarithms. Graphing calculators can plot data and graphs. Financial calculators can calculate interest, loans, and investments
The history of the calculator is a long and fascinating one. From the abacus to the modern-day smartphone, calculators have come a long way in terms of both their design and their capabilities. Who knows what the future holds for this essential tool?
How to look at calculator history on iphone
1. go to the settings app
2. select “general”
3. select “restrictions”
4. enter your restrictions passcode
5. select “allowed apps”
6. scroll down to the “calculator” app and ensure that it is turned on (green)