Question

History of computer in 150 words

Answer 1

The history of computing is longer than the history of computing hardware and modern computing technology and includes the history of methods intended for pen and paper or for chalk and slate, with or without the aid of tables.

Digital computing is intimately tied to the representation of numbers.[1] But long before abstractions like the number arose, there were mathematical concepts to serve the purposes of civilization. These concepts are implicit in concrete practices such as :

One-to-one correspondence,[2] a rule to count how many items, e.g. on a tally stick, eventually abstracted into numbers;

Comparison to a standard,[3] a method for assuming reproducibility in a measurement, for example, the number of coins

The 3-4-5 right triangle was a device for assuring a right angle, using ropes with 12 evenly spaced knots, for example