Barbouri's Electronics Projects
Restoring vintage electronics along with designing and building new circuits. One eye looking into the past, the other looking into the future.
The APF Mark XII (12) is an interesting calculator. It is based on the Cal-Tex Semiconductor Inc. CT5005 FlexiChip, which was developed in 1972. The calculator is a four function with separately addressable memory register, all on a single IC.
A recent addition to the desktop calculator collection is the Canon Canola L100A desktop 10 digit gas discharge display calculator. This unit was purchased as a working calculator, and was in good shape except the heavy yellowing of the beige upper case..
