Not the most practical pen calculator, but quite interesting none the less. Video demonstration after the jump.

A more reasonable application of this technology would be for one to be able to simply write out the problem 65 x 32 = (etc.) and have the calculator voice then answer the question

[via MobileWhack]

Not the most practical pen calculator, but quite interesting none the less. Video demonstration after the jump.

A more reasonable application of this technology would be for one to be able to simply write out the problem 65 x 32 = (etc.) and have the calculator voice then answer the question

[via MobileWhack]