This looks like a great keyboard for text graphics. There are dedicated keys for switching character sets, choosing and defining colours, manipulating fonts (DCRS), etc. Towards the top right, it looks like a dedicated set of keys for “pixeling” on a sub-char level?
This is the TBT-03 keyboard by Loewe, for the MCT 26 television. Circa 1984. It is used for the German videotex format BTX (and possibly other similar CEPT-standards like the Mupid?). Found here. Also see the TBT-02 keyboard
Article in Popular Electronics 1974 to build an ASCII-compatible keyboard for 40 USD. Posted on archive.org as Apple documentation, so this was presumably used for the Apple I.
‘Fingers of Doom’ by Raquel Meyers (2015).
Type in animation on C64. Music by Dan Brännvall & coding by Johan Kotlinski.
Showed at HeK@Liste Art Fair – PEBKAC IMHO.
Keyboard layouts for the APL programming language, which uses symbols instead of words. It was based on EBCDIC and APL had its own set of symbols which in the 1960s was tricky for many screens, printers and platforms to deal with. Nowadays Unicode mostly supports it.
