| Series Foreword | p. ix |
| Foreword | p. xi |
| Preface | p. xv |
| Acknowledgments | p. xvii |
| Punched Cards and Plugwires | p. 1 |
| The Hollerith era | |
| IBM punched-card machine development | |
| Steps toward fully automatic digital calculation | |
| Electronic Calculation | p. 34 |
| Flip-flops and counters | |
| The electronic multiplier | |
| The SSEC, a super calculator | |
| The Type 604, an electronic workhorse | |
| The Card-Programmed Electronic Calculator | |
| A Machine for Ordinary Businesses | p. 73 |
| The choice of drum storage | |
| The drum-augmented 604 | |
| The influence of mathematicacl omputation | |
| The Magnetic Drum Calculator | |
| The squeeze on resources | |
| The president's decision | |
| The Tape Processing Machine | p. 102 |
| The CRT memory project | |
| The Data Processing Test Assembly | |
| Plans for the Tape Processsing Machine | |
| TPM engineering | |
| A time for waiting | |
| First-Generation IBM Computers | p. 130 |
| The need for fast computers | |
| Planning for the Defense Calculator | |
| Engineering considerations | |
| The Type 701 computer | |
| The Type 650 Magnetic Drum Calculator | |
| The Type 702 Electronic Data Processing Machine | |
| Later vacuum tube computers | |
| Magnetic Tape | p. 187 |
| Magnetic tape studies in IBM | |
| Magnetic recording in Poughkeepsie | |
| Tape-handling devices | |
| The need for better tape | |
| First-generation tape machines | |
| More and faster | |
| Excursions from the beaten path | |
| Ferrite-Core Memories | p. 231 |
| Getting started in cores | |
| Project SAGE | |
| Commercial memories | |
| Pushing the limits | |
| Fabrication | |
| Patents and innovation | |
| Disk Storage | p. 273 |
| A separate group | |
| The source recording project | |
| Disk-array feasibility and early development | |
| Record addressing and RAMAC | |
| Slider development in San Jose | |
| IBM's first slider product | |
| Collateral storage development | |
| The removable disk pack | |
| Programming | p. 315 |
| The subroutine library | |
| Two IBM assembly programs | |
| The Speedcoding language and interpreter | |
| The FORTRAN language and cornpiler | |
| Programming as a marketing aid | |
| SHARE | |
| IBM's organization for programming | |
| Early experience with operating systems | |
| Transistors | p. 372 |
| The first transistors at IBM | |
| Entering the solid-state era | |
| Point-contact to junction transistors | |
| Drift transistors | |
| Current-switch circuits | |
| Development and manufacturing | |
| Standard Modular System | |
| Project Stretch | p. 416 |
| "We must take a giant step." | |
| Project Stretch formulation | |
| System planning | |
| Logical design and engineering | |
| The Type 7090, first Stretch-technology product | |
| The 7030 program | |
| Stretch delivery and assessment | |
| Epilogue | |
| Broadening the Base | p. 459 |
| Electronics and accounting machines | |
| The Type 1401 data processing system | |
| Other 1400 series computers the Report Program Generator | |
| High-speed printers the chain and train | |
| Document reading machines | |
| Small scientific computers process control | |
| Research | p. 523 |
| The Watson Laboratory | |
| Research in Poughkeepsie | |
| Separating research from development | |
| Basic research in Zurich | |
| Restructuring the San Jose laboratory | |
| Preparing for the new research center | |
| Exciting projects | |
| Growing problems | |
| The Architectural Challenge | p. 571 |
| Adjusting to new technology | |
| The changing environment | |
| Coping with growth | |
| Product diversity | |
| Architectural considerations | |
| Commitment to change | |
| Sequence Control in the SSEC | p. 585 |
| TPM Organization and Operation | p. 589 |
| Havens Delay Unit Circuit Operation | p. 599 |
| 701 System Design Summary | p. 603 |
| References and Notes | p. 607 |
| Index | p. 695 |
| About the Authors | p. 717 |
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