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X381: Difference between revisions
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which is driven by a Fairchild 9960 decoder/driver IC. | which is driven by a Fairchild 9960 decoder/driver IC. | ||
Within the X381, | |||
The disk functions similarly to a quadrature optical encoder | there is an octagonal aluminum enclosure containing a backlit disk of film | ||
but instead of generating two signals, it generates several signals. | that is rotated by a front panel knob. | ||
The disk functions similarly to a quadrature optical encoder, | |||
but instead of generating just two signals, it generates several signals. | |||
There are human-readable numbers on the disk at each rotational position. | |||
These number are visible outside of the enclosure. | |||
<gallery> | <gallery> | ||