DATAMATH CALCULATOR MUSEUM |
Additional Pictures
This early Spell-Checkers RR-1
without date code was manufactured by Inventec in Taiwan on or around April 1909. |
The printed circuit
board (PCB) of the RR-1 Spell Checker RR-1 with a
typcal micto-computer design centered around a Z-80 compatitoble microprocessor, a huge OTP-ROM, a small RAM and an integrated display driver. |
The TMPZ84C00 microprocessor (CPU) manufactured end of 1988 by Toshiba. |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, October 23, 2009.. No reprints without written permission.