Dc (UNIX)
↑ dc(1): an arbitrary precision calculator – Linux User Commands Manual (en)
1 2 Brian Kernighan and Ken Thompson. A nerdy delight for any Vintage Computer Fest 2019 attendee: Kernighan interviewing Thompson about Unix. YouTube. 該当時間: 29m45s. 2019年9月3日閲覧。
↑ “The sources for the manual page for 7th Edition Unix dc (Internet Archive)”. 2021年3月16日閲覧。
↑ Ritchie, Dennis M. (1979年9月).