911
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The Cintra/Tektronix 911 aka Statistician 911 is a desktop statistical calculator with a Nixie display.
It replaces the log(x), tan(x), hyper, and π keys of its scientific-type sister model 909 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
- 944 TTY interface
- 923 card reader
- 920 "f(x) Repeater"
- 905 Junction box
- 915 X/Y plotter
Links
Documents Referencing 911
| 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 |
Patents that may apply to 911
| Page | Title | Inventors | Filing date | Grant date | Links |
|---|---|---|---|---|---|
| Patent US 3720820A | Calculator with a hierarchy control system | Michael J. Cochran | 1971-03-18 | 1973-03-13 | 909 • 911 |
| Patent US 3760370A | Calculator with a number processing system | Michael J. Cochran | 1971-04-26 | 1973-09-18 | 909 • 911 • 31 • 21 (calculator) |
Pictures
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