A method for testing at least one logic block of a processor includes, during execution of a user application by the processor, the processor generating a stop and test indicator. The housing 1 has an elongated central slot 12 for receiving a daughter card 200. Alerting the drowsy driver condition includes displaying a graphic selected to attract attention of the operator and the substantially transparent windscreen head up display. Automation devices can be added, enabling users to remotely see live video or pictures and control home devices via a personal web portal or other client device. The memory comprises one or more metal oxygen compounds. The system employs a novel architecture which, while being linear, may autonomously sequence processing and move substrates in different directions as necessary.