Casio R1

Casio R1 CPU board

Above the CPU-board of the Casio R1. In the non green-shadowed part of the foto one can see the "embedded" AS-L:

Naturally the 4-Bit shiftregister and the decoder/driver for the display are missing.

Casio R1 printer board

The printer-board; tt accumulates various IC-types from different families. From the old fashioned µPD 10 over HD 3118 until TM 4105. Additionally below the keybord there is a third pcb with two ICs and some additional discrete logic.

Additional to the ICs mentioned above there are
on the printer-board
1 µPD 10, 2 µPD 304, 1 µPD 308, 2 µPD 13, 3 µPD 101, 1 µPD 102

on the printer board
8 µPD 10, 1 µPD 11, 1 µPD 12, 3 µPD 13, 2 µPD 101, 2 µPD 102
2 µPD 303, 1 µPD 304, 1 µPD 308, 1 HD 3118, 1 TM 4105

on the keyboard-board
2 T 1191