A Simplified Approach to the Automation of Circuitry Design

Some firms engaged in the design or manufacture of electronic, electrical, or communications systems have been able to improve design while holding down costs by using highly sophisticated computers. However, the high fixed costs and relative inflexibility of computers make thier use impractical in many instances. In such cases the use of conventional punched card equipment can frequently offer advantages equal to or exceeding those available from computers. As compared to manual design procedures, punched cards can offer labor savings, reduction of design cycle time, improved design, greater accuracy of detail, and greater susceptibility to control. As compared to fully computerized design procedures, punched cards can offer substantially lower machine costs; minimization of heavy startup costs and time lags for programming and debugging; greater flexibility; and greater intelligibility. The system requires that a clerk or draftsman interpret a logic schematic drawing into controlled punched card input format. All subsequent processing is essential mechanical. Final output of the system consists of a file of punched cards, each completely descriptive of a single wire; and listings of these cards in various sequences. The cards are available to prepare additional listings, and for the documentation and control of changes; the lists are used for manufacture, inspection, system test, maintenance, etc.