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Danie van der Merwe on Twitter: "This Open Source WP 34S calculator is based on a HP-42S RPN Scientific Calculator #WP34S https://t.co/ET8Ahjm4b3" / Twitter
Idea for a simple calculator on the DM platform
graphing calculator - Wikidata
Scientific Calculator - Apps en Google Play
DM42 - The Most Precise Calculator.
DM42 (SwissMicros) - Solving Various Engineering Problems - YouTube