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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]].{{cn|date=October 2023}} 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>
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