The circuit for detecting the frequency of binary signals includes a circuit for detecting rising edges in the binary signals, a measuring circuit for measuring the period between the rising edges which supplies a logic state, and a shift register whose input latch stores the logic state. Excessive wrinkling is prevented in the present invention by providing a method and apparatus which controls the amount of material flow during the forming process. The shaft is driven by a reversible motor, the speed and direction of which is controlled by a program controller. In one embodiment, the substrate is cut through each row of via holes and between each row of via holes to produce multiple individual beam-and-trace interposers.