Glossary
TCO
See Electromagnetic radiation standards.
Tilt function
See rotation function.
Trapezoid distortion
See Geometrical distortion.
TTL signal
A TTL (Transistor-transistor-logic) signal is a digital signal level for controlling the screen colors. With TTL
driving, the red, green and blue signals can only be switched on or off or provided with an intensity signal. A
TTL-driven monitor can thus display a maximum of 64 colors. Video standards such as MDA, CGA and
EGA are based on TTL level.
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U
USB or Universal Serial Bus
A smart plug for PC peripherals. USB automatically determines resources (like driver software and bus
bandwidth) required by peripherals. USB makes necessary resources available without user intervention.
● USB eliminates "case angst" -- the fear of removing the computer case to install add-on peripherals.
And USB also eliminates adjustment of complicated IRQ settings when installing new peripherals.
● USB does away with "port gridlock." Without USB, PCs are normally limited to one printer, two Com
port devices (usually a mouse and modem), one Enhanced Parallel Port add-on (scanner or video
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