Hewlett-Packard HP-20S Scientific programmable calculator

General specifications
Type	Scientific programmable calculator
Production years	1989 - 2002
New price	Hfl. 89.95
Operating system	n.a.
Chipset/CPU	-
I/O	-
Performance index	23
Arithmetics
Entry method	Algebraic with precedence
Precision	12 digits
Advanced functions	Trigonometrics Exp and log Hyperbolics Statistics Graphing Solver Fractions Complex numbers Financial Matrices BaseN Unit conversion Constants Equation library
Forensic result	8.99999864267
Features
	Continuous memory Flash card r/w Magnetic card r/w Printer Real-time clock Screen backlight Sound playback Sound recording Tape r/w Touchscreen


Programming
Programming model	Fully-merged keystroke entry
Programming features	Branching Conditions Subroutines Labels Indirect addressing
Program display	Keycode
Program editing	Auto-insert program entry
Memory
Programming	100 program steps
Data	10 numbers
Secondary
ROM
Functions	+ - × ÷
Display
Type	LCD
Size	12(9+2) digits
Dimensions
L×W×H	152×76×12 mm
Weight	170 g
Power
Batteries	3×LR44
External power	-


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Description

This one I bought back in 1989, when I needed it for my education. It still runs on the original batteries (Dec. 2008)! It's simple but effective. Very nice piece of kit.

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Scientific programmable calculator: Hewlett-Packard HP-20S

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This page was last modified on December 10th, 2008

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Hewlett-Packard HP-20S Scientific programmable calculator

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