909

The Cintra/Tektronix 909 aka Scientist 909 is a desktop scientific calculator with a Nixie display.

Manuals – Specifications – Links – Pictures

Sister model Statistician 911 replaces the Log(x), tan(x), hyper, and π keys with factorials and statistical functions.

Accessories

• The 926 Programmer provides programming functionality with conditionals, branching and subroutines for the 909/911.
• 928 Instructor (cassette interface)
• 941 printer
• 923 card reader
• 920 "Repeater"
• 905 Junction box

Links

• Tek 909/911 @ oldcalculatormuseum.com
• Tek 909 @ dustyoldcomputers.com
• Tektronix calculators @ vintagetek.org

Documents Referencing 909

Document	Class	Title	Authors	Year	Links
Tekscope 1971 V3 N5 Sep 1971.pdf	Article	The Tektronix Scientist 909	Dave Takagishi	1971	909 • 926 • 941 • 928 • 911 • Cintra

Price

• $3,780 in 1969 (~$31,400 in 2023 dollars)

Pictures

• 
•