Applied Dynamics International
Applied Dynamics International (ADI) is a US business which previously produced photoelectric encoder keyboards. Applied Dynamics should not be confused with Advanced Datum Information Corporation of Taiwan, who also traded as ADI. Applied Dynamics International also traded under the name Collimation Keyboards.
The only known ADI keyboard type is Series 5000, advertised in 1977 in Electronic Design magazine. Series 5000 is a photoelectric encoder keyboard design offering up to 360 keys and 11 bit output codes. The design offers N-key lockout and 2-key rollover and logical or non-logical pairing.
The Collimation D40.592 keyboard is (keycap colours and markings notwithstanding) identical to the illustration in the Series 5000 advertisement.
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