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Additional Pictures 

 

The Citizen SR-270X calculator in its package

The dot matrix display of the SR-270X
in the "Math Format" mode.

The dot matrix display of the SR-270X
in the "Linear Format" mode.

This Citizen SR-270X was manufactured in 2009 by a Kinpo Electronics in China.

The printed circuit board (PCB) of the Citizen SR-270X hides the single-chip 
calculator circuit under a black epoxy blob.


horizontal rule

If you have additions to the above article please email: joerg@datamath.org.

Joerg Woerner, March 6, 2011. No reprints without written permission.