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Learn the fundamentals of network security in this informative session. Covering topics such as network security basics, common threats, and preventative measures. Suitable for beginners and those looking to refresh their knowledge.
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B.C. 1617 1642 1673 1820 1801 1832 Early Mechanical Computers Napier’s Bones Stepped Reckoner Punch cards Abacus Pascaline machine Arithmometer Babbage’s Difference Engine
An Abacus (BC) A mechanical device used for counting. Addition, subtraction, multiplication and division can be performed on a standard abacus. Using the abacus is still taught in Asian schools and still used by shopkeepers in Asia and “Chinatowns” in the USA.
Napier’s Bones (1617) of logarithms and calculate based on relative position of the scales and when bound together created the first slide rule. • John Napier’s bones work on the principal