Re: How did the 28 work? Message #15 Posted by David Hayden on 9 Mar 2012, 8:01 a.m., in response to message #2 by Eric Smith
Thanks Eric.
I especially like the fact that the electrical connection between the two halves doesn't bend, it twists. See the article for details, but basically the connection between the clam shell halves is a U-shaped circuit running half the length of the calculator. The part that bridges the hinge remains flat inside the hinge and the legs of the U twist to allow this.
I'd love to see similar in-depth articles on the design of newer calculators. Perhaps in HP-Solve.
Edited: 9 Mar 2012, 8:01 a.m.
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