Page:Gametronics Proceedings.djvu/72

 Printed circuit board preparation is an extra operation, but if components on the board need some protective cover, then the "cam bar" can be an integral part of this cover which is automatically installed with the cover.





Pluggability of integrated circuits will continue as one of the paramount packaging requirements in system design. Increased emphasis on higher switching speeds will stimulate the application of ECL, CMOS, NMOS and IMOS devices.

The use of high normal forces, drives the insertion forces for multi-pin devices to totally unacceptable levels. The only acceptable method for eliminating insertion forces is a design that will cam and lock the contacts closed, thus, generating the high mated normal forces required for positive performance.

This is a design aimed at solving all the foregoing problems efficiently. Simply expressed, this means interconnecting with high mated normal forces from the logic package to the printed circuit board. Leaded packages plug into the ZIP connectors and are positively contacted and retained with