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From the design of it, the slanted display and the label placement, my instinct tells me maybe it's a dupe of a Litronix made for
RS.
Edited: 29 Apr 2012, 9:43 p.m.
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But mine use NS chips (CPU&driver), maybe there are different versions, or the CPUs are interchangeable
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Joined: Jul 2007
Litronix manufactured usually in Malaysia, the keyboard is completely different and the display isn't from Litronix.
The CPU is a 40-pin DIP and Rockwell manufactured usually in Mexico. Rockwell keyboard designs are differnt from this one...
Very strange calculator.
Thanks and Regards,
Joerg