Robert Ragen is the legendary inventor of the Friden 130, regarded by many scholars as the first commercial transistorized desktop calculator. The Robert Ragen Friden 130 estate, presented here for the very first time, consists of vast - previously unknown & unpublished - internal Friden Calculator Company documents and artifacts including prototypes, color slides, audio tapes of key internal discussions, and much more - all from Robert Ragen's estate.
The 2nd earliest known public press release for any commercial transistorized desktop calculator/computer
was recently discovered at
The Museum of TrailingEdge Technology
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