IBM 6151 Maintenance And Service Manual page 751

storage. (1) The location of saved
information. (2) In contrast to memory,
the saving of information on physical
devices such as disk or tape. See
memory.
(3) The retention of data in a storage
device. (4) The placement of data into a
storage device.
synchronous transmission. (1) Data
transmission which the time of occurrence
of each signal representing a bit is related
to a fixed time frame. (2) Data
transmission which the sending and
receiving devices are operating
continuously at substantially the same
frequency and are maintained, through
correction, in a desired phase relationship.
TD. Transmit data.
transmission. (1) The sending of data
from one place for reception elsewhere.
(2) In ASCII and data communication, a
series of characters including headings
and text. (3) The dispatching of a signal,
message, or other form of intelligence by
wire, radio, telephone, or other means.
(4) One or more blocks or messages. For
BSC and start-stop devices, a transmission
is terminated by an EOT character.
(5) Synonymous with data transmission.
V. See volt.
volt. The basic practical unit of electric
pressure. The potential that causes
electrons to flow through a circuit.
W. See watt.
watt. The practical unit of electric
power.
write. To make a permanent or transient
recording of data in a storage device or on
a data medium.
(6/88) Glossary
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