Please note that the content of this book primarily consists of articles
available from Wikipedia or other free sources online. A Uniscope was a
class of terminals made by Sperry Rand Corporation, Univac Division, and
successors since 1964 that were normally used to communicate with Univac
mainframes. As such, it was the successor to various models of TeleType.
Due to the text color on the original models, these terminals are
informally known as green screen terminals. Unlike TeleType terminals,
the Uniscope minimizes the number of I/O interrupts required by
accepting large blocks of data, and uses a high speed proprietary
communications interface, using coax cable and hardware devices known as
multiplexors. A Uniscope operator awaits a prompt from the remote
mainframe. The prompt indicates that the mainframe is ready to receive
input.
