TM 5-6675-316-14
(2) The Hall effect device is a transducer which changes its characteristics
operated by magnetic material mounted in the key. Depression of the key activates
the device which then switches the trigger circuit which holds the pulse generator
on. The resultant 8-bit code, which is unique to the key depressed, will remain on-
line until another key is depressed which resets the trigger circuit.
(3) To produce a visual representation of the characters and functional data
input to the phototypesetter, character shapes and associated symbols are displayed
on a 12 in. (30.5 cm) monitor screen.
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