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Definition of "RS 232" |
A serial interface published by the EIA for asynchronous data communication over distances up to a few hundred feet. Characterized by a single ended (not differential) physical layer, it uses one signal wire for transmission, another for reception, and a common wire (ground), plus some timing and control signals. Its specifications are rooted in electromechanical equipment signaling (Teletype machines). Still a very common interface but largely replaced by USB in recent years. |
Definition of "RS-232" |
A serial interface published by the EIA for asynchronous data communication over distances up to a few hundred feet. Characterized by a single-ended (not differential) physical layer, it uses one signal wire for transmission, another for reception, and a common wire (ground), plus some timing and control signals. Its specifications are rooted in electromechanical equipment signaling (Teletype machines). Still a very common interface but largely replaced by USB in recent years. The term "serial" interface is often used for an RS-232 interface. The usage is not quite accurate—while RS-232 is a serial interface, there are other serial interfaces in addition to RS-232. When it was introduced in 1987, the MAX232 rapidly became the most common way to implement RS-232 because it required only a single 5-volt supply. On-board DC-DC converters developed the odd voltages required by the official spec. (Maxim still manufacturers the MAX232 and makes a wide range of newer products as well.) See Selecting and Us ng RS-232, RS-422, and RS-485 Serial Data Standards to learn about the differences between RS-232, RS-422, and RS-485. RS-485 and RS-422 can be configured for full-duplex or half-duplex bus systems. / Recommended Standard 232, / In telecommunication, RS-232 is a standard for serial communication transmission of data. It formally defined the signals connecting between a DTE,such as a computer terminal, and a data circuit-terminating equipmentt, such as a modem. / Radar Absorbent Material, is a class of materials used in stealth technology to disguise a vehicle or structure from radar detection. A material's absorbency at a given frequency of radar wave depends upon its composition. |
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