Casio FX-820P

Technical specifications

RAM (total) : 2 / 4 Kb (1 ramcard of 2 or 4 Kb)
RAM available : 1,568 / 3,616 bytes
ROM : 27 Kb
CPU : VLSI specific
Text screen : 1 line of 12 characters
Graphic screen : No
Sound : Dual tone beep (high, low)
Size : 172 x 94 x 25 mm
Weight : 335 g. with batteries and a ramcard
Year : 1982
Power : 2 CR-2032 lithium batteries + integrated NiCd batteries, 9 Volts power adaptor (CHA-1)

Extensions

Memory  :
RC-2  2 Kb lithium battery saved
RC-4  4 Kb lithium battery saved

Printer : Integrated Thermo printer
FP-40 Thermo printer (using the SB-42)

Storage :
FA-3   External tape interface
FA-5   External tape interface
FP-40 External tape interface (using the SB-42)

Communication :
SB-2   Link cable