{"id":877,"date":"2013-04-30T14:29:16","date_gmt":"2013-04-30T14:29:16","guid":{"rendered":"http:\/\/puthisali.com\/?p=877"},"modified":"2013-04-30T14:29:16","modified_gmt":"2013-04-30T14:29:16","slug":"history-of-the-computer","status":"publish","type":"post","link":"https:\/\/puthisali.com\/english\/2013\/04\/30\/history-of-the-computer\/","title":{"rendered":"History of the Computer"},"content":{"rendered":"<p><span style=\"text-decoration: underline;\">(History of the Computer)<\/span><\/p>\n<p>The history of information communication technology can be divided into four main eras.<\/p>\n<ul>\n<li>Pre mechanical era (before 1450)<\/li>\n<li>Mechanical era (1450 \u2013 1840)<\/li>\n<li>Electromechanical era (1840 \u2013 1940)<\/li>\n<li>Electronic era (1940 \u2013 present)<\/li>\n<\/ul>\n<p>v\u00a0 In the beginning, man used his fingers and toes to perform simple computations such as addition and subtraction.<\/p>\n<p>v\u00a0 3000 BC &#8211; The first man-made computing device is the \u201cAbacus\u201d. In the Abacus, small beads are arranged on a series of vertical rods in a manner that by manipulating them, it is possible with some skill and practice, to make rapid calculations.<\/p>\n<p>v\u00a0 John Napier (1550-1617), a Scottish mathematician, invented the Napier\u2019s Bones &#8211; an aid to multiplication. A set of bones consisted of nine (9) rods, one for each digit 1 through 9. A rod is essentially one column of a multiplication table.<\/p>\n<p>v\u00a0 In 1642, Blaise Pascal, a French mathematician, invented an adding machine. The machine has adopted partly the principles of the abacus but did away with the use of the hand to move the beads or counters. Instead, Pascal used wheels to move counters.<\/p>\n<p>v\u00a0 In 1674, <b>Gottfried Wilhelm Von Leibnitz<\/b> made improvements on Pascal\u2019s machine. With Leibnitz\u2019s improvements, it was possible for the machine to divide and multiply as easily as it could add and subtract.<\/p>\n<p>v\u00a0 Charles Babbage made ANALYTICAL ENGINE (In 1833) and DIFFERENTIAL ENGINE\u00a0 (In 1883)<\/p>\n<p>v\u00a0 1840 \u2013\u00a0 Ada, the first programmer suggested binary\u00a0 data storage rather than decimal.<\/p>\n<p>v\u00a0 1880 &#8211; Joseph Jacquard introduced punch card concept<\/p>\n<p>v\u00a0 \u00a01890 \u2013\u00a0 Dr.Herman Hollerith developed the punched \u00a0\u00a0card that would contain data coded in form of punched\u00a0 holes.<\/p>\n<p>NEXT<\/p>\n<p><b><span style=\"text-decoration: underline;\">Generation of the computers<\/span><\/b><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>(History of the Computer) The history of information communication technology can be divided into four main eras. Pre mechanical era (before 1450) Mechanical era (1450 \u2013 1840) Electromechanical era (1840 \u2013 1940) Electronic era (1940 \u2013 present) v\u00a0 In the beginning, man used his fingers and toes to perform simple computations such as addition and <a class=\"more-link\" href=\"https:\/\/puthisali.com\/english\/2013\/04\/30\/history-of-the-computer\/\">Read More &#8230;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[12],"tags":[],"_links":{"self":[{"href":"https:\/\/puthisali.com\/english\/wp-json\/wp\/v2\/posts\/877"}],"collection":[{"href":"https:\/\/puthisali.com\/english\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/puthisali.com\/english\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/puthisali.com\/english\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/puthisali.com\/english\/wp-json\/wp\/v2\/comments?post=877"}],"version-history":[{"count":0,"href":"https:\/\/puthisali.com\/english\/wp-json\/wp\/v2\/posts\/877\/revisions"}],"wp:attachment":[{"href":"https:\/\/puthisali.com\/english\/wp-json\/wp\/v2\/media?parent=877"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/puthisali.com\/english\/wp-json\/wp\/v2\/categories?post=877"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/puthisali.com\/english\/wp-json\/wp\/v2\/tags?post=877"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}