Computer Graphics

Remember the PSET statement from chapter 5?

PSET ( column , row )

This will SET a Pixel in the "graph paper" of the computer graphics screen. To use it, the QBasic graphics system is started with a GRAPHICS statement. This program draws one white point on the screen:

' Start the graphics system.
SCREEN 12
'
LET X = 56
LET Y = 87
PSET( X, Y)        ' Set one pixel
'
END

The pixel will be white since we have not used a COLOR statement to change the "pen color." If you run this program, the single pixel might be hard to find, it is so small.