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Abacus
The Abacus was an early aid for mathematical calculations made by the Babylonians. It was known to be the first computer -
Napier’s Bones
Napier’s Bones were a set of ivory stick that had logarithms written on them. These were made by John Napier when he discovered how to multiply through addition. -
Schickard’s Calculating Clock
A German Professor named William Schickard invented the first ever gear operated calculator. -
Pascal’s Pascaline
Blaise Pascal initially made this to aid his father who was a tax collector. Then he sold 50 of these gear driven calculators. It was a big success although it was not always accurate. -
Stepped Reckoner
Leibniz’s Stepped Reckoner was the first four function automatic calculator. It got its name because instead of gears it operated on small drums. -
Difference Engine
The difference engine was proposed to be able to solve many tables of number such as logarithms, addition subtraction and more. It became one of England’s most expensive projects and was proven to be too difficult. -
Harvard Mark 1
The Harvard Mark I was the first programmable computer device made by Harvard and IBM. This was not purely electronic although it had switches. -
Apple 2
After an unsuccessful design with the apple 1, they made a fully functional pure electronic computer with a monitor screen and computer that is made mostly out of PCBs -
MacBook Air
The Apple MacBook Air released a year after the first IPhone was released. It is a highly efficient computer that is one of the best-selling computers and it has adapted in to even more highly proficient computers. -
HP Pavilion x360
The HP Pavilion x360 is a computer that has come out recently. It has merged the concept of a modern day laptop and a modern day tablet, has it is a typical laptop that you can fold and use as a touchscreen.
