thumbwheel switch การใช้

• The new digital delay box timers used decimal or binary coded decimal thumbwheel switches to set countdown timer values in digital logic.
• The Thorn Microsystems unit utilized a single chip microcomputer from Intel, a professionally fabricated double sided printed circuit board with plated through holes, large BCD thumbwheel switches, and rugged solid state bipolar output circuitry ( no electromechanical relay ).
• The channel number ( also known as an address ) was set with three thumbwheel switches on each lite and a common practical joke on the part of non-Vari-lite crew, would be to renumber random " lites " ( this became a common way of referring to a Vari * Lite unit on both sides of the Atlantic ).