A multi-tone display matrix display device including a matrix display
panel having a matrix having plural X and Y direction signal lines lying
at right angles to each other, intersecting points on the matrix being
pixels of an image, an X direction driving section for sequentially
scanning X direction signal lines to provide image signals, a Y direction
driving section for driving the Y direction signal lines in synchronism
with the scanning of the X direction signal lines to sequentially provide
select signals to the Y direction signal lines, an A-D converter section
for converting an analog signal into a digital signal, a voltage
generating section for generating signals at plural voltage levels, and a
selector section for selecting an output signal from the voltage
generating section based on the output from A-D converter section and
providing to output to the X direction driving section as an image
signal.