IBM 3767

IBM 3767 Communication Terminal is a serial printer terminal that employed dot matrix print-head technology and, for the first time, the Synchronous Data Link Control (SDLC) communications protocol set under IBM's Systems Network Architecture (SNA).

During the late 1960 and 1970s, the computing environment expanded beyond the large computer rooms based on card input/output and started to allow data input and output terminals from remote locations.

For such purposes, printer terminals such as the IBM 2741, using the traditional asynchronous serial communication (start-stop signaling), and display terminals such as IBM 2260 and IBM 3270, using the new communications protocol set (Binary Synchronous Communications or BSC), became available.

To satisfy such needs, IBM 3767 serial printer and IBM 3770 communications system (including a line printer) became available as part of the "Advanced Communications Function" (ACF) announcement which included the new System Network Architecture (SNA) and Synchronous Data Link Control (SDLC) communications protocol set, followed by another announcement in July, 1975, which included IBM 3760 Data Entry Station and the new models of IBM 3270 display stations, and IBM 3790 communication system.

[1] The 3760 was part of the IBM 3790 distributed processing family.