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2600 BCE
Abacus
Abacus showed how computers manipulate numbers: it consists of a series of beads on parallel wires arranged in three separate rows. -
Schickard Calculator
Schickard calculator is the earliest known mechanical four-function calculator combined with Napier’s Bones, for multiplication and division; it contains a toothed-wheel system to add and subtract. -
Pascaline
Pascaline, also called Arithmetic Machine, the first MECHANICAL calculator to be produced in any quantity and actually used. It could only do addition and subtraction, with numbers being entered by manipulating its dials. -
Antikythera mechanism
A diver discovered it inside the wreck of an ancient cargo ship. It is the first analogical computer, used by ancient Greeks to chart the movement of the sun, moon and planets. -
ABC (Atanassof-Berry Computer)
A mathematician and physicist called John Atanasoff invented ‘Atanassof-Berry Computer’ to solve some problems much easier and faster. It was reconstructed between 1994 and 1997 by the engineers from ‘lowa State University’. -
Mark I
A Harvard graduate student, Howard H. Aiken invented Mark I to solve advanced mathematical physics problems. -
Z3 (Konrad Zuse)
First working programmable, fully automatic computing machine; read programs off a punched film. Calculations on the computer were performed in full binary floating point arithmetic. -
EDVAC
Improved version of ENIAC made by John Mauchly and J. Presper Eckert: has more internal memory and can activate an electronic pulse through storing 0s and 1s -
ENIAC
Inventor: John Mauchly, J. Presper Eckert large-scale computer to run at electronic speed without being slowed by any mechanical parts. Able to solve "a large class of numerical problems" through reprogramming. -
IBM System 360
A computer invented by McDonnell Aircraft Corporation: upgrade version of the first computer of IBM (1401) -
Atari Pong
Atari’s gaming-purpose computer which became popular soon and worked until 2002. -
MITS Altair 8800
MITS, found by Bill Gates and Paul Allen, released Altair 8800 in 1975 with the slogan of ‘easy-affordable’; however, this made the hacker groups to grow. -
IBM PC
IBM’s first personal computer that contains both hardware and software from other companies -
Apple Macintosh
A small personal computer of Apple that a lot of graphics and art-related job workers contributed together to invent it -
Nokia 9000i Communicator
Inventor: Company Nokia
Heavy cellphone that rolled all of the features of a computer into a phone, putting email, web browsing, fax, word processing and spreadsheets into a single pocketable device. -
Babbage’s Difference Engine
Babbage's Difference Engine can hold one number from each of the columns in the table. It would add the second difference to the first, then add that result to the function value to compute the next entry in the table. (31-digit values for polynomials with terms up to x7.) -
Apple iPad (1st generation)
The first tablet of Apple, which is same as a (magical) revolutionary and has state-of-the-art features. -
IBM Watson
A supercomputer with high functioning system invented by IBM; it can access 90 servers, process six million logic rules; in addition, its device and data are self-contained in a space which can accommodate 10 refrigerators.
