It looks like any other low voltage cable, such as a CAT-5 internet cable. There are several variants to the RS-232 standard. The standard defines a 25 pin configuration for serial data communications. In many cases fewer conductors are used. Google RS-232 standard for definition of the connectors, cable length, restrictions, baud rates and voltage levels.
It looks like any other low voltage cable, such as a CAT-5 Internet cable. There are several variants to the RS-232 standard. The standard defines a 25 pin configuration for serial data communications. In many cases fewer conductors are used. Google RS-232 standard for definition of the connectors, cable length, restrictions, baud rates and voltage levels.
DB9 is a connector, not a cable. It is most commonly used for RS-232 serial connections like an external modem.
RS-232 standard is 50 feet.
it is cable used for data transmission between computers
The 232 doesn't stand or come from anywhere. It's just a reference number. RS-232 = Recommended Standard 232
Recommended Standard 232
onion
It refers to the 25-pin or 9-pin male serial port on the back of a PC. "A serial port conforms to the interface standard called RS-232c (Reference Standard 232 revision c), which is why a serial port is sometimes called the RS-232 port. The maximum cable length for a serial cable according to RS-232 standards is 50 feet. This interface standard originally called for 25 pins, but because microcomputers use only nine of those pins, manufacturers often installed a modified 9-pin port." -CompTIA A+ Guide to Managing & Maintaining You PC Sixth Edition
RS-232 is a Recommeded Standard (RS) for serial communications. It can be both input and output, or just one or the other. There are RS-232 devices called DCE (for Data Communications Equipment) like a printer, modem, mouse, joystick, monitor. There are RS-232 devices called DTE (for Data Terminal Equipment) like a notebook computer or tower. Two computers may talk to each other over an RS-232 link. The "boss" computer would be the DTE; the "slave" computer would be the DCE. {In practice, nobody really uses RS-232 for intra-computer linking in home or office, but it might be used for fairly long connections on, say, an antenna farm if fiber optics is unaffordable.}
The RS 232 interface is one of the standards used in serial communications. It uses serial signals (as opposed to parallel) to connect computers to devices like printers and modems.
A good alternative for a RS 232 would be modern USB ports. The RS 232 is a serial binary single ended data port. This port is common on computers; however, recently this port has been replaced by USB ports.
'RS-232' (Recommended Standard 232) is a Standard American format for serial data transmission by cable, such as from computer terminal to modem. RS-232 transmission utilizes a distinctive 25-pin connector, but under most circumstances only a few of the 25 conductors are used. RS-232 was adopted as a standard for serial binary data signals connecting between a DTE (Data terminal equipment) and a DCE (Data Circuit-terminating Equipment). It is commonly used in computer serial ports. RS-232 is similar to the ITU-T standard 'V.24'. The International Telecommunications Union (ITU), which is closely associated with the United Nations (UN), issues various standards for telecommunication systems and equipment for use in all countries which support the UN and ITU.