Download A Brief History of Computing by Gerard O'Regan PDF

By Gerard O'Regan

This entire booklet offers an advent into the main themes within the background of computing in an easy-to-follow and concise demeanour. It doesn't require reports in computing device technological know-how to be able to be understood and liked. The booklet covers major parts and occasions within the box from the beginnings of computation in 3000B.C. via to the current day. useful pedagogical parts resembling routines and bankruptcy summaries are incorporated. targeting the basic components within the computing box, this truly written and broad-ranging textual content will trap the eye and enormously gain computing device technology scholars.

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The island of Antikythera was well-known in the Greek and Roman period for its displays of mechanical engineering. A model of how the Antikythera might have worked is available, and according to that model, the front dial shows the annual progress of the Sun and Moon through the zodiac against the Egyptian calendar, with the other rear dials providing specialised information. It is debatable as to how accurate the model is with respect to the actual device. Other models proposed include that the device acted as a planetarium.

The number 2 is the first prime number and is added to the list of primes in B. Strike off (or remove) all multiples of 2 from List A. The first remaining number in List A is a prime number and this prime number is added to List B. 6. Strike off (or remove) this number and all multiples of this number from List A. 7. Repeat steps 5 through 7 until no more numbers are left in List A. 2 The Sieve of Eratosthenes method is a well-known algorithm for determining prime numbers. Computing students often implement this algorithm as an early computer assignment.

This chapter considered the contributions of early civilisations in providing a primitive foundation for what has become computer science. It included a discussion on the Babylonians, the Egyptians, the Greeks and the Romans as well as contributions from Islamic scholars. The Babylonian civilization flourished from about 2000 BC and they produced clay cuneiform tablets containing mathematical texts. These included tables for multiplication, division, squares, and square roots as well as the calculation of area and the solution of linear and quadratic equations.

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