Editing Olivetti ANK 25-101

{{infobox dkeyboard
| name = Olivetti ANK 25-101
| pn =
| fcc =
| branding = [[Olivetti]]
| manufacturer = 
| switch = [[Membrane vs rubber dome|Rubber dome over membrane]]
| layouts = 101 [[ANSI]]
| interface = [[PS/2]] or 9-pin D-Sub from SDL
| weight =
| years = Late 1980s - Early 1990s
| price = 
}}

The '''Olivetti ANK 25-101''' is a [[rubber dome]] over membrane keyboard from [[Olivetti]]. The ANK 25-xxx keyboards appear to be used on the Olivetti M240, M250, M280 and M290, all of which were produced in the late 80s<ref name="baldi" />.

==Description==
The ANK 25-101 is an [[ANSI]] US keyboard with the popular [[IBM Enhanced Keyboard]] layout. European [[ISO]] variants are known to exist under the model number 25-102 and include Spanish, Italian, French and German layouts. Keycaps are [[Dye sublimation|dye sublimated]] with blue lettering (brown for 'Alt' and 'Sys Rq'), and appear to be made of [[PBT]] plastic. Taking apart the ANK-25 is a matter of removing six screws on the bottom of the keyboard, two of which are hidden behind the height-adjustable feet. Unfortunately, Olivetti's choice for securing the back-plate, PCB, membrane and front mounting plate together means that dismantling the keyboard would likely result in damage that could require a good amount of effort to correct. It appears that metal tabs on the front plate pass through the various layers to the back-plate, and are then twisted to secure everything together. Twisting the tabs back and forth could potentially snap them off or damage them. 

The height-adjustable feet have three settings (neutral, and two height settings) and deploying them is simple and can be done without having to reach under the keyboard like some other designs. The drawback is that returning them requires a bit more effort as the legs must be pulled directly outward to compress an internal plastic locking spring before they can be collapsed. LEDs are an amber colour and occupy the top-right of the keyboard in the standard location. It appears that the LED plate can be removed with relative ease, meaning that a single enclosure design covers the 101 and 102 variants. The keycap inserts on the mounting plate also appear to be removable and are not moulded to the metal case.

Stabilisation is only done on the space bar, with the stabilisation bar itself fixed underneath the top of the keyboards case. This means the stabilisation bar is actually outside of the footprint of the space bar, hence the two cut-outs on the space bar itself to accommodate the bar when bottoming out.

==Keyfeel==
Olivetti rubber dome keyboards generally receive positive reviews from keyboard enthusiasts<ref name="DTent1" /><ref name="GHent1" /><ref name="GHent2" />. The ANK 25-101 have extremely short [[Travel#Key_travel|travel]], perhaps as low as 2 mm. Popular mechanical switches by comparison are usually around the 4 mm mark. This results in an interesting typing experience and might be considered unfavourable for users who prefer not to bottom out keypresses. [[Binding]] is absent, and the design of the keycaps, with diagonally placed pegs in the bottom-left and top-right mean that twisting doesn't really occur on the single unit keycaps.

==Gallery==
===ANK 25-101===
<gallery widths=250 heights=187>
File:Olivetti ANK 25-101 -- Front.jpg             | Front view
File:Olivetti ANK 25-101 -- Back.jpg              | Back view
File:Olivetti ANK 25-101 -- LED Detail.jpg        | LED panel with classic Olivetti brand logo
File:Olivetti ANK 25-101 -- Dome.JPG              | A look at one dome
File:Olivetti ANK 25-101 -- Front Left.JPG        | Front, left side
File:Olivetti ANK 25-101 -- Front Right.JPG       | Front, right side
File:Olivetti ANK 25-101 -- Back Plate.jpg        | Back plate
File:Olivetti ANK 25-101 -- Back Plate Detail.jpg | Detail of back plate
File:Olivetti ANK 25-101 -- Leg Neutral.JPG       | Leg, neutral position
File:Olivetti ANK 25-101 -- Leg Setting 1.JPG     | Leg in medium position
File:Olivetti ANK 25-101 -- Leg Setting 2.JPG     | Leg fully unfolded
</gallery>

===ANK 25-102===
<gallery widths=250 heights=187>
File:Olivetti ANK 25-102 front view.jpg             | ISO layout
File:Olivetti ANK 25-102 serial.jpg                 | Made in Italy
File:Olivetti ANK 25-102 flip feet instruction.jpg  | Instructions for feet
File:Olivetti ANK 25-102 production date.jpg        | Production date on PCB
File:Olivetti ANK 25-102 keycaps.jpg                | Keycaps
</gallery>

==References==
<references>
<ref name="baldi">Baldi.it — [http://www.baldi.it/museo/menu_museo_pc_olivetti.html La Storia dei Computer Olivetti] (Italian only)</ref>
<ref name="DTent1">Deskthority — [http://deskthority.net/keyboards-f2/favorite-rubber-dome-keyboard-t3342.html Favorite rubber dome keyboard?]</ref>
<ref name="GHent1">Geekhack — [http://geekhack.org/index.php?topic=21293.0 Surprised by rubberdome]</ref>
<ref name="GHent2">Geekhack — [http://geekhack.org/index.php?topic=19277.0 1992-1993 Olivetti Keyboard]</ref>
</references>

[[Category:Olivetti keyboards]]
[[Category:Keyboards with rubber domes]]
[[Category:List of all keyboards]]