Simplified contact connector system

A module system which includes a mother board having at least one connector and a plurality of modules that can be stacked on said mother board, with each module having a module board with conductive traces that include plated-through holes and a connector that can be mated to a connector of another boards, wherein each connector includes a housing with an insulator having a base with a plurality of rows of base holes and each connector also includes a plurality of rows of contacts with each contact having a mount portion with a part lying in one of said plated-through holes and another part lying in one of said base holes, and with each contact having an elongated beam of uniform thickness and width extending forwardly away from said base, characterized by:

• first and second of said connectors each has contacts whose beams have rear parts that extend forwardly and with each beam having a forward part with a sidewardly projecting protrusion and with a tip region furthest from said rear part, said contacts of said first and second connectors being matable to each other;
• each of said insulators has a plurality of elongated support walls extending forwardly from said base and extending along one of said rows, with each support wall having a plurality of grooves spaced along one of said rows;
• each pair of said support walls being spaced to form a slot therebetween which receives a support wall of the other connector until the tips of each support wall lies adjacent to the base of the other connector insulator, and each said groove extends around the entire length of each beam except for said protrusion.

A connector system comprising:

• a circuit board having a plurality of plates through holes;
• a plurality of contacts each having a mount portion mounted in one of said holes and an elongated end portion projecting substantially perpendicular to said board along a predetermined height H;
• a generator for generating pulses having a predetermined clock rate R of at least 50 million pulses per second;
• circuitry coupling said generator to each of a first plurality of said contacts to pass pulses of said clock rate R therethrough;
• the length H of said end portions of each of said first plurality of contacts is given by the equation:
• ##EQU3## where C is the speed of light, and n is a whole number chosen from the group consisting of the numbers 6, 7 , 8 , 9 and 10.