Editing IBM 3275/3277 Display Station Keyboard (section)

==Overview==

The IBM 3275 and 3277 Display Stations were the original terminals for the IBM 3270 Information Display System unveiled on May 6, 1971 by the IBM Data Processing Division<ref name=IBMDPD4/>. They were the beginning of the large IBM 3270 family of coaxial connecting terminals that remained relevant in the decades since their introduction. Upon introduction, the IBM 3270 family consisted of the following components:

* IBM 3271 Control Unit; Models 1,2, 11 and 12
* IBM 3272 Control Unit; Models 1,2
* '''IBM 3275 Display Station; Models 1,2, 11 and 12'''
* '''IBM 3277 Display Station; Models 1,2'''
* IBM 3284 Printer; Models 1, 2 and 3
* IBM 3286 Printer; Models 1 and 2
* IBM 3288 Line Printer; Model 2

The 3275 and 3277 differed by how they connected to a host computer such as an IBM System/360 or System/370 CPU - 3275 would attach to a CPU via an IBM 2701 Data Adapter Unit, IBM 2703 Transmission Control or an Integrated Communications Adapter, whereas 3277 would attach to an aforementioned 3271 or 3272 (which then subsequently attached to a CPU)<ref name=IBMGA27-2739-1/>. Despite this, their keyboards are interchangeable and generally share part numbers, thus lacking a per-system distinction.