My letters are to small to read - Computers & Internet

What is your operating system?
If it is a Mac, you can quickly increase size of images by using the
COMMAND key and the "PLUS" key at the same time. Likewise,
the COMMAND and the "MINUS" key will reduce the size. You must
be sure to select the region of the display correctly. Another
way to control image size is to select a different pixel combination
for the display. If you are using a high resolution configuration like
1600 by 900 then the images will be relatively small. A lower number
such as 900 by 600 will project larger images. Mac also has a special
set of control settings to aid persons who are visually challenged.
Check in your owner's information for the means to access the
special needs functions on the Mac.