Abstract: A programmable printer is provided which is capable of printing alphanumeric internally pre-stored data or data information and alphanumeric externally supplied data or data information either separately or in combination with each other. The alphanumeric printout of the printer may be inverted in a manner to allow its visual reading in what would otherwise be an "upside-down" configuration. The programmable printer incorporates a microprocessor for the proper addressing, interpretation and manipulation of input commands, timing information, paper-sensing information, external data information, and internal stored data information, so as to generate output information that seeks the desired data information, whether external or internal, and that drives a printer logic interface and output status lines and print drive interface so as to print the desired information and to monitor the status of the printer.

Abstract: A miniaturized computer controller system utilizes reprogrammable "read only" ultraviolet memory chips instead of conventional core memories to store a control program comprising variable information regarding all electrical elements in all electrical circuit lines of the controller. The memory chips are reprogrammable within the controller and thus delicate removal of the chips for reprogramming is eliminated. The controller utilizes a central processor removably interfitting with a reprogramming module that also communicates with a programming panel.When in a "monitor" mode, the programming panel, in conjunction with the reprogramming module, allows the operator to view any particular electrical circuit line while the controller is operating. A scroll switch on the programming panel further allows the operator to view sequentially higher or lower numbered electrical circuit lines while a trace switch provides for examining any electrical circuit line to which a currently viewed element is referenced.

Abstract: By providing an input/output panel housing which is readily connectible to adjacent housings and which cooperates with up to four removable input/output modules, a completely expandable, modularized input/output panel construction is achieved. Each housing accommodates up to four "plug-in" input/output modules, and is constructed so that the wiring from the equipment being controlled is connected directly to fixed terminals and need not be removed when the input/output modules are removed or replaced. Since each housing is readily connectible to adjacent housings, the input/output panel board construction of this invention is completely flexible and readily expandable to meet any desired operational needs.