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Preliminary Specifications: Programmed Data Processor Model Three (PDP-3) October, 1960   By:

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The book, "Preliminary Specifications: Programmed Data Processor Model Three (PDP-3) October, 1960" by Digital Equipment Corporation, is a comprehensive documentation of the third-generation computer system.

This meticulous work presents readers with a detailed exploration of the PDP-3, a significant advancement in computer design during the 1960s. The book covers the complete range of specifications, features, and technical aspects of this groundbreaking computer model.

One of the notable strengths of this publication is its thoroughness. The authors leave no stone unturned as they delve into the intricate inner workings of the PDP-3. From its central processing unit to memory organization and input/output capabilities, every aspect is meticulously explained. This level of detail makes it an indispensable resource for computer historians, researchers, and enthusiasts wanting to understand the technical underpinnings of early computer systems.

Moreover, the book provides a clear description of the programming model implemented in the PDP-3. It outlines the instruction set architecture and describes the functioning of various registers, addressing modes, and memory operations. This comprehensive coverage enables readers to gain a comprehensive understanding of how the PDP-3 operates and how programmers could utilize its capabilities effectively.

Additionally, the inclusion of technical diagrams and illustrations adds immense value to the content. The visuals aid in visualizing complex concepts, making the book accessible to a wider audience. The book also includes appendices containing sample programs and detailed explanations, further enhancing its practicality.

However, it is important to note that this publication is not aimed at casual readers or those seeking a general overview of computer history. Due to its highly technical nature, the book may be overwhelming for readers without a background in computer architecture and programming. It primarily caters to individuals with a specific interest in early computer systems and their underlying technologies.

In conclusion, "Preliminary Specifications: Programmed Data Processor Model Three (PDP-3) October, 1960" is an exceptional reference for those interested in the development of early computer systems. Its meticulous documentation and comprehensive coverage ensure that it remains an indispensable resource for computer historians and researchers alike.

First Page:

PRELIMINARY SPECIFICATIONS

PROGRAMMED DATA PROCESSOR MODEL THREE (PDP 3)

October, 1960

Digital Equipment Corporation Maynard, Massachusetts

TABLE OF CONTENTS

INTRODUCTION 1

General Description 1 System Block Diagram 1 Electrical Description 4 Mechanical Description 4 Environmental Requirements 5

CENTRAL PROCESSOR 6

Operating Speeds 6 Instruction Format 6 Number System 7 Indexing 8 Indirect Addressing 8 Instruction List 9 Manual Controls 20

STORAGE 22

STANDARD INPUT OUTPUT 23

Paper Tape Reader 23 Paper Tape Punch 24 Typewriter 24

OPTIONAL INPUT OUTPUT 26

Sequence Break System 26 High Speed In Out Channel 26 Magnetic Tape 27 CRT Display 33 Real Time Clock 33 Line Printer 34

UTILITY PROGRAMS 35

FRAP System 35 DECAL System 35 Floating Point Subroutines 36 Maintenance Routines 37 Miscellaneous Routines 37

INTRODUCTION

GENERAL DESCRIPTION

The DEC Programmed Data Processor Model Three (PDP 3) is a high performance, large scale digital computer featuring reliability in operation together with economy in initial cost, maintenance and use... Continue reading book >>




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