First Progress Report: On a Multi-Channel Magnetic Drum Inner Memory, for Use in Electronic Digital Computing Instruments (Classic Reprint) - Hardcover

J. H. Bigelow

9780267643646: First Progress Report: On a Multi-Channel Magnetic Drum Inner Memory, for Use in Electronic Digital Computing Instruments (Classic Reprint)

Hardcover

ISBN 10: 0267643640 ISBN 13: 9780267643646

Publisher: Forgotten Books, 2018

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First impressions of an early memory design that aimed to speed up computing

This nonfiction look at a multi-channel magnetic drum memory explains how engineers planned a high‑speed inner memory for an electronic computer. It outlines the problem, the design choices, and the practical limits they faced, all framed around concrete experiments and engineering reasoning.

The document surveys the key questions that shaped the inner memory project, including how to achieve millisecond access times, long life, and scalable capacity. It discusses a circulating memory concept, the role of reading and writing heads, and how to balance speed with reliability. The narrative stays focused on the practical steps taken to move from theory to a working apparatus.

How access time, drum speed, and channel density affect overall performance
How experimental pulse generation and high‑gain readout circuits were developed
Why several identical channels and careful coupling between head and medium matter
What engineering limits appeared at high speeds and large capacities

Ideal for readers of computing history and engineers curious about the origins of magnetic memory technology, this edition provides a clear, grounded view of early design challenges and decisions that influenced later computer systems.

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