Category: HP-28S

Creating a new HP 28S case

Creating a new HP 28S case Index 3D Model 3D-Printer Cost Mailing list 3D Model Aug 26th 2017: Since you have to “destroy” the case to open the clamshell calculator I am going to have a 3D model designed which I can then print in 3D. I decided a few days ago to purchase some …

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How to open a HP 28S calculator

How to open a HP 28S calculator Index Problem How to open the HP28S (right side) Cleaning the contacts How to open the HP28S (left side) See also the next post for creating a new HP28S case Problem Key row ‘Y’ to ‘)’ and ‘EVAL’ to ‘-‘ are not working How to open the HP28S …

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