The transistor drives the set of three LEDs to form a light source. When no data exists on the RS-232C port, the LEDs remain off. When data transmission takes place, the LEDs glow at the rate of the ...

A clever way to consolidate enough power from the TX data and handshake lines on an RS-232C port to run a small circuit. The typical RS232 transceiver interface IC found in many embedded systems ...

Features include the company’s SX Virtual Link Serial Port Emulation, an industry-standard DB-9M RS-232C port, auto sensing, and an exclusive auto-find and setup utility. Pricing is $99 each.