Tektronix 2200 Manual Do Utilizador

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G
Glossary
A
Abort: 
 An instruction used to terminate 
execution of a computer program or 
routine.
Accumulating Latch:  
Electronic circuitry 
that allows several signals to be latched on 
at the same time and then combined to 
produce a compound effect. 
Active Video:   
The portion of a video signal 
that contains picture information.
Array:  
A series of like items arranged in an 
intersecting pattern, such as a RAM array.
ASCII:  
American Standard Code for 
Information Interchange.
Aspect:  
The ratio between the width and 
the height of an object such as a wipe 
pattern or a video screen.
Assembly:  
A major part of a system that 
consists of more than one component. For 
example, the main control panel is an 
assembly within the Model 4000 Switcher. 
(Also see Component and System.)
Asynchronous:  
A mode of computer 
operation where the CPU immediately 
begins a new task upon completion of the 
previous task. (Also see Synchronous.)
Audio Mixer:  
An electronic device that 
takes audio signals from any of several 
sources (such as microphones, tape 
recorders, etc.) to produce audio effects. 
(Also see Switcher, Video.)
Auto Transition:   
A smooth or linear 
electronically-produced transition made 
by pressing a pushbutton ([AUTO TRAN]
instead of moving a lever arm.
B
B-Y:  
The designator used to describe the 
Blue minus Luminance color portion of a 
component video signal.
Background Color Suppression (BCS):  
chroma key feature which enhances the 
appearance of chroma keys by 
suppressing unwanted halo effects. 
Background Generator:  
A video generator 
that produces a solid-color output which 
can be adjusted for hue, saturation, and 
luminance. The output of the generator is 
the color background signal applied to a 
primary input.
Background Transition:   
A transition 
between signals selected on the 
PROGRAM and PRESET background 
buses or A and B Background buses.