CASIO fx-61f

Electric formula 27

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Date of acquisition: 2019/12/23
From: 

Library

 Download of the manual at http://www.usersmanualguide.com/
 This machine is unique, it has 27 formulas usable in electricity.
 These formulas are accessible using special keys located in the center of the keyboard. It's extremely rare to find such a specific key layout on a Casio scientific calculator.

 Due to the particularity of this machine, it remains highly sought after by specialists.

 Here is the list of available formulas:

 Formula details (thanks to Muttley Snickers)