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It replaces the Log(x), tan(x), hyper, and π keys of its scientific-type sister model [[909]] with factorials and statistical functions. | It replaces the Log(x), tan(x), hyper, and π keys of its scientific-type sister model [[909]] with factorials and statistical functions. | ||
The [[926|926 Programmer]] provides programming functionality with conditionals, branching and subroutines for the 909/911. | ==Accessories== | ||
* The [[926|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== | ==Links== |