Texas Instruments 3000 WinSX - Manual (Page 25)

LCD Screen
Contrast Control
The Contrast rotary control adjusts the contrast between the displayed image and the
background for the best viewing condition. Adjust this control in conjunction with the
Brightness control.
The Contrast control does not affect power consumption.
Standard/Reverse Switch
The screen normally displays black characters on a white background. You can reverse
this image to white on black by setting the standard/reverse switch to the q (reverse)
position.
Some graphics programs, Microsoft Windows for example, may display like a
photographic negative on the LCD screen. Reversing the image should correct this effect.
Leaming About Your Computer 2-5