Abstract: The invention relates to a computer system having a chassis with an access door allowing a user to access the computer circuitry. The computer circuitry has a plurality of critical circuit boards and an interlock circuit routed through connectors and cables associated with the critical circuitry. If any of the connectors are not connected or connected improperly the main power is prevented from turning on or the main power to the computer is turned off and auxiliary power is used to power indicator lights which aid a user determine which connector is not connected or improperly connected.

Abstract: A fish feeder assembly having at least one water receiving container eccentrically mounted on a rotatable shaft for oscillating the shaft as the container is sequentially filled with water and emptied when the container and shaft are pivoted by the weight of the water. The assembly includes a frame having an interior portion defining a longitudinal opening, a feed bin having at its lower portion a passageway communicating with the longitudinal opening for passage of fish feed, a metering rotor securedly affixed to the shaft and essentially filling a transverse sectional area of the passageway for rotation whereupon metered portions of fish feed are dispensed from the hopper through the longitudinal opening in the frame.