Atlas R300
Brother Procal 508AY
Casio FX-795P Pocket Computer
Casio PC FX-730P
Konkret 100
Olympia CD60
Privileg LC 10000 Super Timer
Psion 5 MX Pro
Psion 5 MX Pro
Sharp PC-1401
SHARP Pocket Computer PC-1246S
SHARP Pocket Computer PC-1270
SHARP Pocket Computer PC-1403H
SR1 (Schulrechner1)
Texas Instruments SR-10
Texas Instruments TI 1750

Konkret 100
VEB Röhrenwerk Mühlhausen, 1975
8 digits
The Konkret pocket calculator series was the successor to the Minirex calculator. They also used an 8-digit red LED display for display. Compared to the Minirex, the power supply was built into the computer for the Konkret, which is why the computer's housing was 16.5 x 8.6 x 4 cm.