A system for use in monitoring the statuses of a plurality of similar type objects includes transmitting terminals, logic structure and display structure. When used to monitor the status of a hotel room, information identifying the hotel room, and its status, including whether the room is vacant and not made up, vacant and made up, and occupied, is shown on a display. Information identifying a particular room and describing its status is transmitted from any transmitting terminal to the logic. S...

In a plural unit system, particularly of the data processing type, controlled units such as tape drives, constitute status reporting units (SRUs) which report status including error conditions to one or more status analyzing units such as computers (CPUs), programmable controllers, and the like. Each of the SRUs has a register, such as a shift register, associated therewith for receiving error status indications. The signal state of the shift register when all zeros indicates error-free status, ...

A status monitor for coaxial cable networks is disclosed. The monitor is designed to be directly attached to an output port of an amplifier/repeater in the network and is used as an aid in trouble shooting faults in the network. The monitor comprises a detector (12 or 40) which generates a d.c. voltage indicative of the level of a pilot frequency signal on the network. This d.c. voltage is supplied to a plurality of voltage comparators (18, 20 and 22) which compare the d.c. voltage with differen...

A status indicator for a dishwasher that has a front-loading door and an upper basket having a wire frame within the dishwasher is made up of a body and a hook, where the hook is rotatingly affixed to the wire frame of the upper basket in one of two positions, the first position with the body rotated onto the outside of the upper basket so that the door is kept in an open state, and a second position, in which the body is rotated to the inside of the upper basket, so that the door is left in a c...

A room-status-signalling system comprises a central unit containing a plurality of pairs of indicator lamps and a plurality of room units each containing an indicator lamp corresponding to a respective pair of indicator lamps at the central unit. The remote room units are interconnected with the central unit by call wires to form a plurality of signalling circuits, each signalling circuit containing a single-call wire and including switching means at the remote unit and the central unit for sele...

A plurality of status reporting units are connected respectively to a plurality of shift registers. The shift registers receive and store status signals from the status reporting units. Each of the shift registers include an OR circuit for combining the signals from all of the stages of the respective shift registers. An output of the OR circuit is connected to the input of one stage of a shift register other than the shift register supplying signals thereto. The arrangement is such that the one...

There is disclosed a switching arrangement for effecting storage module reconfiguration in a data processing system wherein the memory comprises a quantity q of operating n-bit/BSM's (basic storage modules) and a quantity s of spare n-bit/BSM's. The arrangement comprises an input status register means which in turn comprises an input status register associated with each of the BSM's respectively, which control an input reconfiguration network, and an output status register means which comprises ...

A telephone status monitor apparatus for determining the on/hook and off/hook conditions of a telephone connected across tip and ring terminals across which a ringing voltage may be present and superimposed on normal on/hook and off/hook voltages. The ringing voltage typically has an "on" time of two seconds and an "off" time of four seconds. The apparatus in accordance with the invention includes status circuitry operative under microprocessor control to repetitively sample the voltage across t...

An activatable, and deactivatable electronic status determining label of ferromagnetic construction, and broad application, in tagging objects to permit selective detection of tagged objects depending upon the activation state of the label. The label comprises a thin, layered structure of any size and shape having a central layer of ferromagnetic substance sandwiched between two thin non-magnetic covers. The activated state is derived by producing a multiplicity of magnetically saturated lines, ...

An apparatus is disclosed which creates a signal that indicates when a door has remained open for a predetermined amount of time. The apparatus includes a switch element responsive to the opening of the door and the closing of the door for monitoring the positional status of the door. The apparatus further includes electrical circuit components responsive to the monitoring switch for detecting when the door has been open for the predetermined period of time. The apparatus also includes electrica...