HP-41 modification: what is this (see photos)?
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06-10-2022, 08:08 AM
Post: #1
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HP-41 modification: what is this (see photos)?
An HP-41CX fullnut I bought long ago shows a lengthy hole on the underside near one of the rubber feet.
It‘s (the calc‘s, not the foot‘s) speed is quite double of that of my other 41s! Opening it, I find an extra PCB and additional wiring. CAT 2 doesn’t reveal any hidden ROMs. What have I found here??? Any clues? A turbo modification? Klaus 11C|41CX (half)|41CX (full),ETS turbo|48G, Lorenz Comp 256k|34C| 41CV (full), misc. ROMs, periph.s, IL (in order of appearance)|15C CE |
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