The types now called semiconductor devices are as follows. According to its manufacturing technology, it can be divided into discrete device semiconductors, photoelectric semiconductors, logic IC, analog IC, memory and other categories. Generally speaking, these will be further divided into small categories. In addition to the classification of IC in manufacturing technology, IC is also classified by application field and design method. For example, according to the processed signal, IC can be divided into analog, digital, analog-to-digital hybrid and functional IC, and IC, LSI, VLSI (super large LSI) and its scale. The following chart: