The Televideo 9220 keyboard was OEMed for Televideo terminal systems and other systems. This keyboard was sold either as a module that an OEM could integrate into their own case or as a full keyboard with a case. The keyboard module is more common to come across on rather than the keyboard with the case.
This keyboard was OEMed for Televideo:
Switches
Keycaps
Mounting Plate
PCB
Case
The locking switch for this keyboard are special as it's the first time that a keyboard would have the alpha lock function available.
The layout is unique to this keyboard where the big ass enter with a 1.75u backspace key. Additionally, the numberpad consists of some other special keys like the double 00 key and CE key.
The switch plate is made out of stamped steel. The switch plate is then painted in a black paint and coated to prevent rust.
The PCB is single sided with all traces on the back side of the PCB.
The is made from a single piece of ABS plastic with an indent where the OEM can put the badge that is for the customer of the keyboard. The upper case also has a see-through strip where the user can put the custom functions that they have assigned via the badge location.
The lowercase contains hard bumpons and fold away feet that when folded away are recessed into the bottom of the lowercase.
Top
Switch
Bottom
Locking Switch