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O-ROM
Optical Read Only Memory
Similar to CD-ROM in concept but applies to optical disk
cartridges. The data is stamped on the disk and remains
unchangeable.
ODD
Optical Disk Drive
Open Loop Stepper System
Open loop in contrast to closed loop.
Conventionally driven positioning system, where the
read/write head is moved over the storage medium in
individual, equal and unchangeable steps, irrespective of
eventual changes (without feedback), generally driven by
a stepper motor.
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