This article describes
an electronic version
of an age-old tool for
games of chance: the
die. It is, however, not
cubical, but the number
of spots on the
six faces of the traditional
cube are
represented by LEDs
on a small printed-circuit
board that light
when a contact is
touched by hand.
Powered by a small
3 V lithium
manganese button
cell, the compact
device may also be
used as a trinket for
which a clip can be
soldered on to the
board.
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