transducer Litton Monroe Epic 3000 (页面存档备份,存于互联网档案馆) - Shows details of the torsion delay lines inside this electronic calculator of 1967. Magnetostrictive
Manhattan Prep Publishing. 2011: 73. ISBN 9780979017599. Square Root Calculator. calculatorsoup.com. [2020-04-25]. (原始内容存档于2017-05-24). For example, the
Cognate functions. An Atlas of Functions: with Equator, the Atlas Function Calculator 2. Springer Science+Business Media, LLC. 2009: 336 [1987]. ISBN 978-0-387-48806-6