Abstract: A conditions monitor circuit for repetitively displaying the condition of a plurality of sensors which recognize different conditions includes a plurality of gates that are divided into groups which specify conditions for their respective sensors. The gates in each group are connected to a particular sensor and there is a clock for sequentially enabling each group of gates. The enabling clock pulse for each group of gates is also connected to a driver circuit to indicate which sensor is being interrogated. The gates in each group are connected to all of the conditions indicating driver circuits through diodes. There are display means connected to the driver circuits for indicating both the particular sensor being scanned and the condition of that sensor.

Abstract: A method and apparatus for forming rows and columns of closely spaced micron sized holes in a thin foil, including a cylindrical member and means for rotating it. There are means for mounting a plurality of axially extending foil strips on the cylindrical member and means for moving said foil strips axially of the cylinder. There are a plurality of stationary lasers uniformly positioned in a single plane about the periphery of said cylindrical member and means for correlating movement of said cylindrical member, axial movement of the foil strips and the firing of said lasers so as to form holes as described in closely spaced rows and columns.