“…However, more important has been the development of the capability of the microcomputer to communicate with the outside world, that is, laboratory interfaces for connecting switch inputs and outputs to power drivers. Although a oneboard microprocessor coupled with a peripheral interface adaptor (PIA) with hexadecimal key inputs may be sufficient for real-time control of a visual stimulator (Brown & Deffenbacher, 1978;Kashinsky, Romanczyk, & Treiber, 1979) and data acquisition (Criswell & Babcock, 1978), the BASIC interpreter provided with the Commodore PET appears to be powerful for realtime laboratory experimentation (Durrett, 1978).…”