USB Everywhere All At Once
Introduction With the arrival of USB C and the final collapse of the last corporate resistance to the standardization of digital interconnection, it is instructive to reflect on the evolution of these connectors and their electrical and signaling standards going back at least to the 1960s. My first experience with remote computing connections came when I was in high school. Our school established a relationship with a time sharing operator and situated a Teletype Model 33 ASR device in a small windowless room in the high school. The device connected by telephone and acoustic coupler to the remote computer and we wrote and ran programs in BASIC. The interconnection between the modem and the teletype was a bundle of wires presented through a DB-25 connector. DB25 (male) connector This connector was referred to at the time as a "D Subminiature," a designation that may have made sense to the engineers who developed it but that is now viewed with hilarity. What was fascinating ...