316 • Glossary
Modular I/O System
ETHERNET TCP/IP
9 Glossary
B
Baseband
Systems which operate without carrier frequencies, i.e. with unmodulated
signals. Therefore, they only offer one channel which has to be logically tai-
lored to the various requirements. Opposite: Wideband.
Bit
Smallest information unit. Its value can either be 1 or 0.
Bit rate
Number of bits transmitted within a time unit.
BNC
Bayonet Navy Connector. Socket for coaxial cable.
BootP
the bootstrap protocol is a protocol which specifies how system and network
information is to be transmitted from a server to work stations.
Bridge
Connects two separate networks.
Broadcast
Message which is sent to all stations connected to the network.
Bus
A structure used to transmit data. There are two types, serial and parallel. A
serial bus transmits data bit by bit, whereas a parallel bus transmits many bits
at one time.
Byte
Binary Yoked Transfer Element. A byte generally contains 8 bits.
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