Abstract: A method for low-voltage architectural anodizing of aluminum and aluminum alloy articles by using a direct anodizing current ranging for different machines from 10 kA up to 50 kA and more, plus a superimposed alternating current of industrial frequency. The combination of DC and AC reduces the DC voltage component across the tank to less than 10 VDC thus cutting the power consumption in the tank to half of the usual consumption in the straight DC anodizing. The resonant DC+AC power supply to feed the architectural anodizing machine is derived from the power supply claimed in the U.S. Pat. No. 4,170,739, by employing three one-phase transformers instead of one three-phase transformer, and three one-phase saturable core reactors instead of one three-phase saturable core reactor as a voltage control device. Magnetic cores of all transformers and saturable core reactors are therefore decoupled making it possible to supply the tank with the required level of the direct current component.

Abstract: An improved system of numerical description "in-the-large" of a program logic is used for global analysis of long-lived programs needed for perfective maintenance, including program enhancing and program reusing. Documentation "in-the-large" comprises linear program circuits, each circuit consisting of at least three non-routine logical parts consecutively following each other. A program circuit is individually numbered and its data-processing task is semantically described, creating a linear data flow (LDF). Documentation "in-the-large" is developed from the immediate environment of each logical part, this environment being represented by a numerical description of all links of this part with neighboring logical parts.

Abstract: Data processing for an improved description of the logical structure of a large computer programs supervises, implements and coordinates a collection of informational words numerically describing links between different individually numbered portions of the computer program. These portions are called logical parts. Each link represents a transfer of control from one logical part through its exit to the entrance of another logical part. Each informational word contains at least seven numbers; of which three numbers--a logical part number, an exit number, a program line number of the exit--describing the exit of one logical part, the other three numbers describing the entrance of the linked logical part, and the last number describing the location of the informational word in the collection.