Excluding the abacus or slide rule, the first mechanical calculator was invented by French inventor, Blaise Pascal in 1642. It could add or subtract two numbers or divide and multiply by repetition, using geared wheels.Know More
In 1820, a device in a patent filed in France by Thomas de Colmar, became the first commercially viable counting machine. The design was copied by around 20 companies across Europe. In 1877, the Grant Mechanical Calculating Machine was born and in 1886, the P100 Burroughs Adding Machine arrived. It was not until 1948 that a pocket-sized calculator was invented and came in the form of the Curta calculator.
It was not until the 1960s and the advent of electronic devices that the electronic calculator came to be. ANITA (A New Inspiration To Arithmetic/Accounting) was the first all-electric desktop calculator and was released in 1961. They sold for about $1,000 when they were released that, in 2014, is nearly $8,000 after accounting for inflation. In 1965, the ELKA 22 was produced in Bulgaria and was the first calculator in the world to have a square root function. The end of bulky calculators did not happen until 1968 when Texas Instruments released the Cal Tech, the first hand-sized calculator that printed the results to paper.Learn more about Inventions
The comb is such a basic human tool that historians have no way to know who the inventor of the first comb was. Combs that have been found by archaeologists have been located in settlements from 5,000 years ago in Persia.Full Answer >
Bicycle Motor Cross or BMX-style bikes evolved from do-it-yourself modifications of existing bike frames; however, the first commercially-sold bike to be widely used for such modifications was the 1963 Schwinn Sting-Ray. The Sting-Ray itself had been inspired by the motorcycle-style modifications being applied to standard bikes in southern California.Full Answer >
The oldest pocket knife, or "jack knife," ever discovered dates back to around 600-500 BC. It was unearthed in Hallstatt, Austria, and it features a single blade with a bone grip.Full Answer >
Alexander Graham Bell invented the telephone on March 10, 1876. Bell had been working on the invention for nearly four years before his success with the electromagnetic telephone.Full Answer >