Reference STATE OF THE ART Stan Augarten

ISBN 0-89919-195-9
Index
Scanned

1977
Transcript
An Unexpected Breakthrough
The First 65,536-Bit (64K) Dynamic RAM
IBM


The First 65,536-Bit (64K) Dynamic RAM

A bit may be read out of or into this IC in 300 billionths of a second. The round balls in the center are lead-tin connectors and are used as contacts for wires linking the chip to other devices. the four rows of light yellow paddles in the middle of the memory grids on either side of the chip are miniscule fuses that can be blown to shut off defective memory cells and to steer signals to extra cells. At 0.366 x 0.693 inches, this chip is the largest in the book; later IBM 64K RAMs were almost 50 percent smaller.

STATE OF THE ART
©Copyright Stan Augarten
This book is provided for general reference. The National Museum of American History and the Smithsonian Institution make no claims as to the accuracy or completeness of this work.

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