DATAMATH CALCULATOR MUSEUM
|The CheckMaster fits
neatly into the pockets of a shirt.
|The CheckMaster is
powered by six AAA-size batteries.
|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
just 14 keys, Earlier versions used ceramic packages for the MK6225N.
If you have additions to the above article please email: firstname.lastname@example.org.
© Joerg Woerner, March 23, 2003. No reprints without written permission.