IBM XT 5160 Technical Reference page 405

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.
TTL. Transistor-transistor logic.
typematic
k~y.
A keyboard key that repeats its function when
held pressed.
v.
Volt.
vector. In computer graphics, a directed line segment.
video. Computer data or graphics displayed on a cathode ray
tube, monitor, or display.
view point. In computer graphics, the origin from which angles
and scales are used to map virtual space into display space.
viewing reference point. In computer graphics, a point in the
modeling coordinate space that is a defined distance from the
view point.
viewing transformation. Operations on the coordinates of an
object (usually matrix multiplications) that cause the view of the
object to be rotated about any axis, translated (moved without
rotating), and/or scaled (changed in size along any or all
dimensions). Viewing transformation differs from modeling
transformation in that perspective is considered. See also
modeling transformation.
viewplane. The visible plane of a CRT display screen that
completely contains a defined window.
viewport. In computer graphics, a predefined part of the CRT
display space.
volt. The basic practical unit of electric pressure. The potential
that causes electrons to flow through a circuit.
Glossary-34