1. A complete data processing system comprising integrated circuits, with all said integrated circuits within said complete data processing system being fabricated on a single monolithic substrate, said complete data processing system including means for input directly from a source external to the system without said input being relayed through a physical connection between the monolithic data processing system and the source processing means, memory means, and means for generating an output to a receiver external to the system without that output being relayed through a physical connection between the monolithic data processing system and the receiver, wherein said means for generating an output include means to send human comprehensible output directly to a human operator without said output being processed by or passing through any separately fabricated device; and wherein the input means include means to receive input directly from a human operator without that input being relayed through or processed by any separately fabricated device.