Abstract: The circuit board repair and rework apparatus comprises: a camera; a device for positioning a circuit board in a predetermined location beneath the camera; a computer including a CPU and memory; electrical circuitry coupled between the camera and the computer for digitizing the camera image and supplying the digitized representation of the camera image to the computer; a visual display coupled to the computer; the memory storing "GERBER" data related to a plot or layout of the circuit board positioned beneath the camera; electro mechanical structure coupled to the computer for positioning the camera at a desired position over the circuit board; electro mechanical structure for focusing the camera on the circuit board; and, input devices and circuitry to the computer for controlling the position of the camera and for causing an overlay on the visual display between a plot of the digitized camera image of the circuit board and the plot of the circuit board obtained from the "GERBER" data.

Abstract: A method is described for preparation of an adduct product for use as a binder medium for paints to be applied by electrodeposition. This product is the adduct resulting from the solution of a solid polycycloalkadiene polymer having a molecular weight of 700-800 in a liquid polyalkadiene polymer of 500-5000 molecular weight after the initiation of the adduct formation reaction by the addition of an unsaturated polycarboxylic acid or its anhydride. The adduct is formed by adding the acid or anhydride to the solution of the solid polymer in the liquid. The resulting adduct product is suitable for use as a paint binder for electrodeposited paints when diluted with water. The paint composition may be formed by mixing of pigments into the binder and then suspending the mixture in water.