In research and practice, digital microscopes have become the essential tools with the advancements in digital technology. The Japanese company Hirox Co. Ltd. was the first who build the first digital model of the microscope in 1986. The early era of 2000s, the company Hirox Co. Ltd. has released built-in monitors with innovative units. Then, in 2015, another digital model has been introduced by the same company which connects the model to a computer with the help of USB 3.0. It is how USB microscopes found the popularity among others microscopes.