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DIY Calculator
04-08-2019, 11:01 PM
Post: #1
DIY Calculator
Hi,

I putting together a kit to build a pocket HP RPN style calculator and would like to get feedback as to what to add or remove.

The basic idea was to make a kit anyone could build using standard, off the shelf thru-hole electronic components.

Current features:
• 64 bit (IEEE 754) floating point arithmetic
• 4 stack (x, y z and t)
• 10 memories
• Trig functions (rad & deg)
• LOG, LN
• % %CHS
• Display Backlight
• auto shutdown
• long battery life with 2 AAA alkaline batteries
• SQRT, x^2, 1/X
• Conversions from metric to Imperial (length, speed, volume, mass, temp)
• Date and Time clock (has watch crystal)
• FIX, SCI and ENG Notation with comas or period separator
• Audio keypress feedback (beeps)

Please see pictures and let me know what you think.

Thanks,
-alx


https://giga.com/rpn%20calc/IMG_1333.JPG
https://giga.com/rpn%20calc/IMG_1333.JPG
https://giga.com/rpn%20calc/IMG_1334.JPG
https://giga.com/rpn%20calc/IMG_1335.JPG
https://giga.com/rpn%20calc/IMG_1336.JPG
https://giga.com/rpn%20calc/IMG_1331.JPG
https://giga.com/rpn%20calc/IMG_1337.JPG

[Image: IMG_1337-sm.jpg]
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Messages In This Thread
DIY Calculator - agarza - 04-08-2019 11:01 PM
RE: DIY Calculator - Dave Britten - 04-09-2019, 03:09 AM
RE: DIY Calculator - agarza - 04-09-2019, 09:42 AM
RE: DIY Calculator - Dave Britten - 04-09-2019, 11:22 AM
RE: DIY Calculator - agarza - 04-09-2019, 03:25 PM
RE: DIY Calculator - rprosperi - 04-09-2019, 05:35 PM
RE: DIY Calculator - Dan - 04-10-2019, 05:31 AM
RE: DIY Calculator - Steve Simpkin - 04-10-2019, 06:38 AM
RE: DIY Calculator - Dave Britten - 04-10-2019, 02:02 PM
RE: DIY Calculator - agarza - 04-10-2019, 09:06 PM
RE: DIY Calculator - Dan - 04-09-2019, 05:40 AM
RE: DIY Calculator - agarza - 04-09-2019, 09:47 AM
RE: DIY Calculator - agarza - 04-09-2019, 05:03 PM
RE: DIY Calculator - agarza - 04-09-2019, 05:43 PM
RE: DIY Calculator - agarza - 04-09-2019, 07:12 PM
RE: DIY Calculator - agarza - 04-09-2019, 08:45 PM
RE: DIY Calculator - rprosperi - 04-09-2019, 10:55 PM
RE: DIY Calculator - agarza - 04-10-2019, 02:20 AM
RE: DIY Calculator - Eddie W. Shore - 04-12-2019, 01:00 PM
RE: DIY Calculator - Maximilian Hohmann - 04-12-2019, 01:54 PM
RE: DIY Calculator - Steve Simpkin - 04-13-2019, 04:52 AM



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