An executive or a demonstrator can write his ‘blackboard’ notes
across a long distance through a transmitter unit hooked up by telephone
lines with a projector unit and screen.
FYBMS, SYBMS, TYBMS and beyond BMS
An executive or a demonstrator can write his ‘blackboard’ notes
across a long distance through a transmitter unit hooked up by telephone
lines with a projector unit and screen.
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