The Full Wiki

More info on Typebar

Typebar: Wikis

  

Note: Many of our articles have direct quotes from sources you can cite, within the Wikipedia article! This article doesn't yet, but we're working on it! See more info or our list of citable articles.

Encyclopedia

From Wikipedia, the free encyclopedia

Jammed typebars

A typebar is an 'arm' inside a typewriter with a character on the end of it. There are generally two characters per typebar, one which will be printed if the corresponding key is struck by itself, the other of which will be printed if the corresponding key is struck while the shift key is depressed. To have letters typed in exact location, the typebar is guided all its way till the ribbon through its narrow gap in segment.

In early typewriters in the 1860s, the typebars would often jam when two or more keys were depressed simultaneously (see picture). Such jamming led to the creation of the QWERTY keyboard in 1873.[1] Mechanisms to avoid such jamming had been created by 1879, but the keyboard layout remained as the legacy of the early problem.[1]

References

  1. ^ a b David, Paul (May, 1985). "Clio and the Economics of QWERTY". The American Economic Review 75 (2): 332–337. http://www.jstor.org/stable/1805621.  







Got something to say? Make a comment.
Your name
Your email address
Message