Casio PB-770

Technical specifications

RAM (total) : 8 / 16 / 24 / 32 Kb (0 to 3 ramcard of 8 Kb)
RAM available : 6,871 / 15,063 / 23,255 / 31,447 bytes
ROM : 32 Kb
CPU : VLSI specific
Text screen : 4 lines of 20 characters
Graphic screen : 32 x 160 pixels
Sound : Dual tone beep (high, low)
Size : 200 x 88 x 23 mm
Weight : 315 g. with batteries
Year : 1984
Power : 4 AA alkaline batteries, one CR-1220 lithium battery

Extensions

Memory : OR-8   8 Kb

Printer :
FA-10  4 colors technology
FA-11  4 colors technology
FP-40   Thermal technology (using the SB-41)
FP-100 4 color technology (using the FA-4)

Storage :
FA-4    External tape interface
FA-11  Integrated tape
FP-40  External tape interface (using the SB-41)
CM-1   Integrated micro tape

I/O : FA-4    Centronic interface