The official guide to @compactdiscinteractive
(Reference guide published by Addison Wesley in 1992)
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in reply to @dog's post:
I feel like the other use cases seem pretty straight-forward but what is the pitch on CD-I as Point of Sale?
Computers were still really expensive, even embedded systems. The idea was you had a standard device with spec available you could write your own software for, and with both a controller port and a serial port for you to add inputs like a barcode scanner and a modem. It didn’t work out because computers got cheaper faster than they thought they would.