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RJ-45: (Registered Jack-45) A telephone connector that holds up to eight wires. RJ-45
plugs and sockets are used in 10BaseT Ethernet and Token Ring Type 1
devices.
root directory: The directory on a disk at the “top” of the directory (or folder) structure. All
subdirectories (folders) on the disk connect directly or indirectly to the root
directory. In MS-DOS, the root directory on drive C is referred to as C:\.
router: A device that routes data packets from one local area network (LAN) or wide area
network (WAN) to another.
RS232-C: The standard defining control, data and status signals for cables allowing
asynchronous communication with computers, printers, and other peripheral
devices.
S
SCSI channel: A standard communications protocol for external and internal device
expansion, such as hard drives, tape drives, and CD-ROM drives.
SCSI ID: A unique identifier assigned to each SCSI device connected to a SCSI bus. The
ID number defines the device address and determines the device priority on
the bus. ID 7 (SCSI controller) is the highest priority; ID 0 is the lowest.
select: To highlight text or display handles around graphics.
serial: The handling of data bits one after the other.
serial communications: A communications technique that uses as few as two
interconnecting wires to send bits one after another.
serial interface: An interface between systems or system components in which
information is transmitted sequentially, one bit at a time. The transmitted bits
are reassembled at the receiving component. A modem uses a serial interface.
serial port: A communications port (COM1 or COM2) to which you can connect a serial
device, such as a modem, a mouse or a serial printer.
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