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Line 26: While [[typewriter]]s are the definitive ancestor of all key-based text entry devices, the computer keyboard as a device for electromechanical data entry and communication derives largely from the utility of two devices: [[teleprinter]]s (or teletypes) and [[keypunch]]es. It was through such devices that modern computer keyboards inherited their layouts. As early as the 1870s, teleprinter-like devices were used to simultaneously type and transmit [[stock market]] text data from the keyboard across telegraph lines to [[stock ticker machine]]s to be immediately copied and displayed onto [[ticker tape]].~~<ref>~~{{~~cite~~cn}} ~~web~~The teleprinter, in its more contemporary form, was developed from 1907 to 1910 by American mechanical engineer [[Charles Krum]] and his son [[Howard Krum\|Howard]], with early contributions by electrical engineer [[Frank Pearne]]. Earlier models were developed separately by individuals such as [[Royal Earl House]] and [[Frederick G. Creed]]. ~~\|title=Essay on Technology Advancements in Computer Interfaces~~ ~~\|url=https://www.123helpme.com/technology-advancements-in-computer-interfaces-preview.asp?id=364629~~ ~~\|access-date=6 August 2018~~ ~~\|archive-date=7 August 2018~~ ~~\|archive-url=https://web.archive.org/web/20180807001608/https://www.123helpme.com/technology-advancements-in-computer-interfaces-preview.asp?id=364629~~ ~~\|url-status=live~~ }}</ref> The teleprinter, in its more contemporary form, was developed from 1907 to 1910 by American mechanical engineer [[Charles Krum]] and his son [[Howard Krum\|Howard]], with early contributions by electrical engineer [[Frank Pearne]]. Earlier models were developed separately by individuals such as [[Royal Earl House]] and [[Frederick G. Creed]]. Earlier, [[Herman Hollerith]] developed the first keypunch devices, which soon evolved to include keys for text and number entry akin to normal typewriters by the 1930s.<ref>{{cite news\|url=http://www.zdnet.com/pictures/gallery-ibm-100-years-of-thinking-big/\|title=Gallery: IBM: 100 Years of THINKing Big\|author=Smith, Andy\|work=[[ZDNet]]\|date=15 June 2011\|access-date=20 October 2015\|url-status=live\|archive-url=https://web.archive.org/web/20151210153020/http://www.zdnet.com/pictures/gallery-ibm-100-years-of-thinking-big/\|archive-date=10 December 2015\|df=dmy-all}}</ref>

Computer keyboard: Difference between revisions