DATAMATH CALCULATOR MUSEUM |
Additional Pictures
The CheckMaster fits neatly into the pockets of a shirt. |
The printed circuit board
(PCB) of the CheckMaster makes us of a MK6225N single-chip calculator IC, a display driver, 6 digits of 7-segment LED's and just 14 keys. |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, March 23, 2003. No reprints without written permission.