atâ¢eâ¢lecâ¢taâ¢sis. 1. incomplete expansion of the lungs at birth, as from lack of breathing force. 2. collapse of the lungs, as from bronchial obstruction. atel(á¸s) incomplete (a-a- 6 + -telÄs, adj. derivative of telos tÃ©los, end) + completion ektasis]. Ã©ktasis extension
Serial Port. Even though the communication in PS/2 and USB is serial, technically, the term Serial Port is used to refer the interface that is compliant to RS-232 standard. There are two types of serial ports that are commonly found on a computer: DB-25 and DE-9.
In computer networking, a port is an endpoint of communication in an operating system. While the term is also used for physical devices, in software it is a logical construct that identifies a specific process or a type of network service. A port is always associated with an IP address of a host and the protocol type of the communication. It completes the destination or origination network address of a message. Ports are identified for each protocol and address combination by 16-bit unsigned num