P/N 1393387 - Model M SRK Keypad Details & Specs
Provided by the ASK Keyboard Part Number Database
| Known Assembly Part NumbersKnown Assembly Part Numbers Possible numbers found inside this keyboard used to indicate its internal assembly and the keycaps on it. |
1393388 |
| Market Model Name/Feature CodeMarket Model Name/Feature Code The consumer-friendly model number describing this keyboard as a part of a range of products, usually irrespective of target region, language or SKU. |
2549 |
| TypeType A designation from my own type naming scheme used to categorise this keyboard with or from others by their common features and market intent but may/may not be derived from official names. |
Model M Screen Reader Keypad |
| OEMOEM Possible companies responsible for making this keyboard for the company marketing it. |
IBM U.S. |
| Key-switchesKey-switches The name of the known switching mechanism that lies under this keyboard's keys. |
IBM membrane buckling springs |
| Earliest AppearanceEarliest Appearance The year (and possibly the quarter) that this keyboard part number was introduced, first observed, first recorded or the first example found. |
1988 Q1 |
| WithdrawnWithdrawn The date this keyboard part number was withdrawn from marketing. This doesn't necessarily mean production or refurbishments ended on the same date, just the keyboard was no longer being sold under normal circumstances from then on. |
1995-04-28 |
| Original KeycapsOriginal Keycaps The keyboard's original keycaps' material and text/symbol printing technique. |
PBT with dye-sublimated legends |
| Casing ColourCasing Colour The original colour of this keyboard's outer casing. For keyboards whose casing materials are known to yellow, this will refer to the original colour before such transformation occurs. |
Pearl White |
| BrandingBranding The possible branding and logo styles found on this keyboard part number. This could be multiple styles at once or possible styles found over time. |
IBM grey oval badge, IBM blue oval badge |
| FeetFeet The style of this keyboard's flip-out or extendable feet. If applicable, this may also state how many levels of height adjustment are available and whether the feet could be rubberised. |
Flip-out wire foot |
| ProtocolProtocol The protocol(s) this keyboard can use to speak to the host computer (eg, scancode sets). |
IBM scancode set 2 (modified) |
| ConnectionConnection The keyboard-to-host connection. This is could be a description of a cable (its colour, whether its coiled, whether its detachable, and what connector is at its end) or the name of a wireless technology. |
Grey coiled-style detachable 6-pin SDL to PS/2 mini-DIN cable |
| Key CountKey Count The number of keys that this keyboard originally had. |
18 |
| Form FactorForm Factor The standardised or universally acknowledged name for this keyboard's layout form factor. |
Keypad |
| Earliest Recorded PriceEarliest Recorded Price The earliest price, currency and year of record found for this keyboard part number. |
$600 USD in 1988 |
| Additional NotesAdditional Notes Extra notes about this keyboard that may be of interest or are important to know. |
Possible FRUs include 1393515 for the keypad and 72X8537 for its SDL cable (although this requires more confirmation) |
| Source(s)Source(s) Documents ("Doc"), websites and/or webpages ("Web") that were used as a source of information for this keyboard part number. Examples of this keyboard part number I own ("ASK") will also be included as sources. |
ASK: SNKB-M1989-SR2-18 Doc: IBM Customer Announcement Summary - January 26, 1988 (#C88-001) [source: IBM] Doc: Withdrawal: IBM Screen Reader Keypad and Cable -- Replacement Available (#195-112) [source: IBM] Web: https://techmonitor.ai/technology/ibm_announces_ps2_screen_reader_keypad |
| Related Directory EntriesRelated Directory Entries Possible ASK Keyboard Directory entries that relate to this part number. The Directory serves as a convenient way to find and share a particular keyboard, containing links to where to find out more about the keyboard and sometimes common part numbers. |
IBM Screen Reader Keypad |
| Data Last Updated | 2023-03-08 |
More on this type of keyboard...
The IBM Screen Reader Keypad ("SRK") was the original peripheral component of the IBM Screen Reader series (PS/2 Screen Reader 1.0, Screen Reader 1.1, Screen Reader/DOS series and Screen Reader/2 series), first announced alongside the original software release in January 1988.
On introduction, the Screen Reader system brought an increased level of accessibility to PC users with hard or lack of sight. The later Screen Reader/2 was the first fully functional GUI screen reader. The SRK takes the form of an 18-key PS/2-style buckling springs keypad, and it's technically a mouse replacement as it originally plugged into the mouse port of an IBM PS/2 compatible or into a special ISA expansion card for PC/XT and PC/AT style systems that lacked a PS/2 mouse port. As such, the SRK doesn't output standard scancodes and thus will exhibit weird behaviour through a modern PS/2 keyboard port or PS/2 to USB converter. Along with the IBM Model M PS/2 50-key Function Keyboard, the SRK is unique amongst Model Ms in that its internal assembly was based on an earlier Model F keypad assembly and thus took several production values from Model F designs. This included the use of individual barrels, a metal barrel plate, foam padding, and no plastic rivets holding the assembly together. The assembly's previous incarnation was the 24/25-key Model F keypad. The SRK was withdrawn from marketing on 11th April 1995.
