International Business Machines Corporation

Intermen Corporation

Robert Morris Meade

Marc Alan Auslander

Albert Y Chang

Thomas Kwei

Daniel R Sappe

Eddie L Wagner

Stanley R Andersen

Robert G Kinkade

A first group of memory locations stores information. The first group is arranged into multiple congruence classes of memory locations. The congruence classes include a first congruence class having more than one memory location. A second group of memory locations stores information from the first group of memory locations. Directory locations store information relating the first and second groups of memory locations. The directory locations include a first directory location able to store information relating a particular one of the second group of memory locations to any memory location of more than one of the congruence classes including the first congruence class.

Circuitry and method for relating first and second memory locations

There is disclosed a printed circuit card with pin connector elements along one edge thereof. With two parallel rows of pins which pass through the card and extend out of each side, the same female-type connector element cannot be attached to either side; the two rows of pins are transposed relative to the connector on the two sides of the card. In the invention, however, three parallel rows of pins are provided. The pins of the middle row extend out of each side of the card, while the pins in only one of the outer rows extend out of each side of the card. The same-positioned pins in the outer rows are connected to each other through the circuit card. In this way, the same connector can be disposed on either side of the card and connected to the two rows of pins which extend from that side for establishing an identical electrical connection to the printed circuit.

Connector arrangement for printed circuit card

Growing community of inventors

Wassaic, NY, United States of America

Robert Morris Meade