As part of this interface, the UART also: 1  Converts the bytes it receives from the computer along parallel circuits into a single serial bit stream for outbound transmission. 2  On inbound transmission, converts the serial bit stream into the bytes that the computer handles.
Cell specialization is the process in which a generic cell develops  into a specific type of cell. This happens in response to specific  triggers from the body or the cell iâ¦tself. Three examples of  specialized cells are the sperm cell, the fat cell, and the white  blood cell.
Epithelial cells are specialized cells which line many different kinds of tissue. Columnar epithelial cells are named because they are somewhat rectangular in shape and resemble a column in their orientation. Columnar epithelial cells are often specialized so that they can have a variety of different functions in the tissues which they line.