Chorded keyboard (English Wikipedia)

Lyons, K.; Plaisted, D.; Starner, T. (2004-10-31). "Expert Chording Text Entry on the Twiddler One-Handed Keyboard". Eighth International Symposium on Wearable Computers. Computer. pp. 94–101. CiteSeerX 10.1.1.69.3470. doi:10.1109/ISWC.2004.19. hdl:1853/58. ISBN 978-0-7695-2186-2. S2CID 9988843.
Clawson, J.; Lyons, K.; Starner, T.; Clarkson, E. (2005-10-18). "The Impacts of Limited Visual Feedback on Mobile Text Entry for the Twiddler and Mini-QWERTY Keyboards". Ninth IEEE International Symposium on Wearable Computers (ISWC'05). Computer. pp. 170–177. CiteSeerX 10.1.1.119.1185. doi:10.1109/ISWC.2005.49. ISBN 978-0-7695-2419-1. S2CID 2072795.
Rochester, Nathaniel; et al. (December 1978). "The Chord Keyboard". IEEE Computer. 11 (12): 57–63. doi:10.1109/C-M.1978.218024. S2CID 17205604.

dougengelbart.org

"Half-QWERTY: A One-handed Keyboard Facilitating Skill Transfer From QWERTY". Edgar Matias. 1991-03-21. Retrieved 2011-10-24.
Matias, Edgar; MacKenzie, I. Scott; Buxton, William (1994). "Half-QWERTY: A One-handed Keyboard Facilitating Skill Transfer From QWERTY". INTERCHI '93 Conference on Human Factors in Computing Systems: 88–94.

"GKOS Demo". FI: MB net. Archived from the original on 2017-01-14. Retrieved 2011-10-24.

Lyons, K.; Plaisted, D.; Starner, T. (2004-10-31). "Expert Chording Text Entry on the Twiddler One-Handed Keyboard". Eighth International Symposium on Wearable Computers. Computer. pp. 94–101. CiteSeerX 10.1.1.69.3470. doi:10.1109/ISWC.2004.19. hdl:1853/58. ISBN 978-0-7695-2186-2. S2CID 9988843.

"Ingenuity". America! The Greatest Country in the History of Mankind. Archived from the original on 1 May 2012. Retrieved 25 February 2012.

Lyons, K.; Plaisted, D.; Starner, T. (2004-10-31). "Expert Chording Text Entry on the Twiddler One-Handed Keyboard". Eighth International Symposium on Wearable Computers. Computer. pp. 94–101. CiteSeerX 10.1.1.69.3470. doi:10.1109/ISWC.2004.19. hdl:1853/58. ISBN 978-0-7695-2186-2. S2CID 9988843.
Clawson, J.; Lyons, K.; Starner, T.; Clarkson, E. (2005-10-18). "The Impacts of Limited Visual Feedback on Mobile Text Entry for the Twiddler and Mini-QWERTY Keyboards". Ninth IEEE International Symposium on Wearable Computers (ISWC'05). Computer. pp. 170–177. CiteSeerX 10.1.1.119.1185. doi:10.1109/ISWC.2005.49. ISBN 978-0-7695-2419-1. S2CID 2072795.

Lyons, K.; Plaisted, D.; Starner, T. (2004-10-31). "Expert Chording Text Entry on the Twiddler One-Handed Keyboard". Eighth International Symposium on Wearable Computers. Computer. pp. 94–101. CiteSeerX 10.1.1.69.3470. doi:10.1109/ISWC.2004.19. hdl:1853/58. ISBN 978-0-7695-2186-2. S2CID 9988843.
Clawson, J.; Lyons, K.; Starner, T.; Clarkson, E. (2005-10-18). "The Impacts of Limited Visual Feedback on Mobile Text Entry for the Twiddler and Mini-QWERTY Keyboards". Ninth IEEE International Symposium on Wearable Computers (ISWC'05). Computer. pp. 170–177. CiteSeerX 10.1.1.119.1185. doi:10.1109/ISWC.2005.49. ISBN 978-0-7695-2419-1. S2CID 2072795.
Rochester, Nathaniel; et al. (December 1978). "The Chord Keyboard". IEEE Computer. 11 (12): 57–63. doi:10.1109/C-M.1978.218024. S2CID 17205604.

Rainey, C; Rainey, P; Rainey, M (2009). "Bellaire Electronics, Cykey, Microwriter, Agenda". Retrieved 2011-10-24.

Lytton, Charlotte (11 January 2022). "This could help you type at 500 words per minute". Retrieved 21 November 2022.

"Spiffchorder Project". Vassar. 2010-03-27. Archived from the original on 2017-07-20. Retrieved 2011-10-24.
"FeatherChorder Project". Vassar. 2016-02-20. Archived from the original on 2017-07-22. Retrieved 2016-02-21.

IBM 026 Keypunch photo (archived)
"Ingenuity". America! The Greatest Country in the History of Mankind. Archived from the original on 1 May 2012. Retrieved 25 February 2012.
"GKOS Demo". FI: MB net. Archived from the original on 2017-01-14. Retrieved 2011-10-24.
"Spiffchorder Project". Vassar. 2010-03-27. Archived from the original on 2017-07-20. Retrieved 2011-10-24.
"FeatherChorder Project". Vassar. 2016-02-20. Archived from the original on 2017-07-22. Retrieved 2016-02-21.