Editing IBM Beam Spring Keyboards (section)

==5281 & 5285==
<gallery widths="300" heights="180" caption="5280 Distributed Data System">
File:1600px-MNACTEC keyboards (31123483945).jpg|5281 Terminal shown with 66 key data entry keyboard
File:S-l1600.jpg|5281 keyboard (Spanish) with top removed
</gallery>The 5281 and 5285 are video terminals made for the 5280 Distributed Data System. Described as a low cost way to enter data into and communicate data with larger computers, the 5280 offered increased performance from the 3740 Data Entry System which it was aiming to replace. Unique among IBM terminals, the 5285 was able to act as a controller and process data on the spot without being connected to a host device. The keyboard offerings were identical to the offerings for the 5250 System, however the bezels on the sides were shortened and the bottom bezel was elongated, to create a palm rest. As a result, the standard 83 key keyboard has the same form factor as the later Model F [[IBM Model F#IBM 5291 Keyboard|IBM 5291 terminal]] and Datamaster 5324 keyboards, and was the first keyboard to have this form factor. The top of the case is a cheaper and thinner plastic than on most beamsprings, and also yellows with age and light exposure, unlike most other models. While the legends are mostly identical to those from the 5250 System, there are a handful of unique legends on the number pad and function cluster. These keyboards use a speaker for auditory feedback similar to the 6580 Displaywriter and 4978 Display Station keyboards. Bizarrely, the speaker location was changed midway through production and was moved from being mounted in the upper right to the bottom left on later keyboards.