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- The EIA Standard, RS-232-C, is the interface between Data Terminal
- Equipment(DTE), and Data Communication Equipment(DCE). DTE is typically
- a computer, printer, or terminal. DCE is generally a modem. RS232-C
- is the latest version of the standard and outlines the set of rules for
- exchanging data between computers and peripherals.
-
- It was originally designed to allow computers, terminals, or printers
- to be connected to modems. However, it has been used extensively to
- connect computers to local devices, including printers, plotters, and
- other computers. Because of the change in use, cross-over cables must
- be designed. SCS grew out of this requirement.
-
- The standard has 4 categories of leads, ground, data, control, and timing.
- Protective ground is used for protection from electrical shock, with
- Signal ground used as a reference for the other categories of leads.
- The Data leads are used for transmitting and receiving data. Control
- leads control the interface, direction of data flow, and indicate the status
- of the attached equipment. The timing leads are used only in synchronous
- environments. Typically when printers are being attached to computers,
- these leads are not used.
-
- Press any key to continue