What is the difference of Monocular, binocular, trinocular microscope?

Monocular, binocular, trinocular means how many eyepiece and what kind of view tube a microscope have.

1. Monocular microscope

Only one eyepiece. 


One eyepiece with a photography/camera interface.



2. Binocular. 



3. Trinocular is a binocular with a photography/camera interface.



A trinocular microscope can connect with camera and screen/computer or touch pad .