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The Casio FX-841P computer

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Technical specifications
RAM (total)	:	8 / 16 / 40 Kb (0 or 1 ramcard of 8 or 32 Kb)
RAM available	:	3,536 / 11,728 / 36,304 bytes
ROM	:	32 Kb
CPU	:	VLSI Specific
Text screen	:	2 lines of 32 characters
Graphic screen	:	No
Sound	:	Dual tone beep (high, low)
Size	:	193 x 78 x 12 mm
Weight	:	197 g. with batteries
Year	:	198?
Power	:	2 CR-2032 + 1 CR-1220 lithium batteries
Extensions
Memory	:	RP-8      8 Kb
		RP-33  32 Kb
Printer	:	FP-40   Thermal technology, using the SB-44,
		or the FA-6 and the SB-43
		FP-100 Four colors pens technology, using the FA-6
Storage	:	FA-6    External tape recorder interface
I/O	:	FA-6    RS-232 / Centronic interface