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GO-21 SciRPN

by Stephen Lidie

GO-21 SciRPN simulates the venerable HP-21 Pocket Scientific Calculator from 1975

$2.99 in the App Store

What is it about?

GO-21 SciRPN simulates the venerable HP-21 Pocket Scientific Calculator from 1975. Virtually indistinguishable from the real item in operation, GO-21 is a powerful yet simple retro calculator.

App Details

Version
6.1
Rating
NA
Size
12Mb
Genre
Utilities Productivity
Last updated
September 1, 2020
Release date
August 28, 2009
More info

App Screenshots

App Store Description

GO-21 SciRPN simulates the venerable HP-21 Pocket Scientific Calculator from 1975. Virtually indistinguishable from the real item in operation, GO-21 is a powerful yet simple retro calculator.

• RPN (Reverse Polish Notation)
• 10-digit LED calculator display, 10-99 to 10+99
• Four stack registers with roll down
• One storage register with arithmetic memory operators
• Math, trigonometric, polar/rectangular, logarithmic, power and other miscellaneous functions
• One additional window with views of:
◦ stack/storage registers
◦ keystroke log

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