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
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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