A PC’s serial port provides signal lines that you can use to expand the number of input signals. With some additional circuitry tied to these lines, you can use the port to test digital TTL ...
18don MSN
Your TV's RS-232 port is a powerful automation tool - how to unlock it (and what it can do)
Your TV's RS-232 port is a powerful automation tool - how to unlock it (and what it can do) ...
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