The status indicating circuit diagram of serial interface of computer

Published:2011/5/9 21:31:00 Author:Ecco | Keyword: status indicating circuit, serial interface, computer | From:SeekIC

The construction of circuitry is simple, and there are only 6 resistances, 2 transistors and 2 light-emitted diodes, used as status indicating of serial interface of computer RS-232. When D1 is lit, it means the logic is 0 , the connecting voltage is about 4.5~5.5V; When geting semaphore, the power cost is about 27mA.



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