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Apple II/II+ (Europlus) ABT Inc. Tastierino Numerico

Apple II+ (Europlus) ABT Inc. Numeric Keypad

Ringrazio un mio caro amico che mi ha regalato questo tastierino numerico.

Autopsy:

L’Advance Business Technology Inc (ABT) è un tastierino numerico esterno realizzato per la linea di computer Apple II.

  1. 21 April 2014 a 15:27 | #1

    I’ve provisionally assigned these switches code USw UXBW01 (white on black generic cruciform mount with unknown contact mechanism):

    http://deskthority.net/wiki/USw_UXBW01

    They look so familiar, but I can’t place where I’ve seen something like that before.

  2. 26 April 2014 a 0:48 | #2

    Identified as Datanetics switches; patent: https://www.google.com/patents/US3777090

  3. Ramon
    28 May 2014 a 21:42 | #3

    I’m want to get my ABT keypad apart to rectify two non-activating number keys. Can anyone tell me how it dissembles?

    No sign of any screws. Pulled a rubber foot off the base in case a screw might be beneath it but it wasn’t.

    Is there by any chance anything under the label on the base which needs to be accessed? I don’t want to spoil the label unnecessarily.

    If it is just a question of inserting a lever into the joint between top and bottom sections of the casing and twisting it, I’d like to know just where the optimum location points to insert the lever are to avoid potential damage.

    Any help would be received most gratefully.

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