People from all over the world are connected all the time. The human can do wondrous today without hesitation. A click unites far away relations and friends who were apart. All these credits go to Information Technology (IT). Without the contribution of IT, civilization and development for a better living would have been so impossible. Evolution of IT overtime has helped human in their daily task surviving in this stranded world during the 4 basic periods; Premechanical, Mechanical, Electromechanical, and Electronic.
Premechanical age survived with writing and alphabets for communication, paper and pens as input technologies, books for storage devices, a first numbering numbering systems and the first clculator: an abacus, the very first information processors.
The mechanical age discovered metal type printers, first general purpose computer and slide rule, Pascalin and Leibniz's machines. ANalytical engines and punch card idea was evolved during this age.
Electromechanical age discovered the conversion of knowledge and information into electricity. The beginnings of telecommunication mark the creation of radio, telegraph, battery and telephones.
Electronic age is the period from year 1940 to present where it involves huge shift to a modern world. Amazing start of this age are discovery and creation of electronic vacuum tubes, 4 generations of digital computing, intergrated surfaces and 4th generation language software products. Tremendous software and hardwares are coming up till today to ease human life daily. Thanks to Technology.
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