| Preface and Introduction | 6 |
|---|
| A Reader s Guide | 8 |
| Acknowledgements | 10 |
|---|
| Contents | 11 |
|---|
| 1 The Small Seeds of Innovation | 16 |
|---|
| 1.1 Post-war Britain | 16 |
| 1.2 Old-Style Computing | 17 |
| 1.3 Ferranti Ltd. in the UK s Industrial Context | 19 |
| 1.4 Ferranti: A Powerhouse of the Northwest | 22 |
| 1.5 A Baby Is Born | 24 |
| 1.6 The Amazingly Brief MOS Contract | 29 |
| 1.7 The Wider Context | 33 |
| References | 33 |
| 2 Academic/Industrial Collaboration: From Chorlton-on-Medlock to Moston, and Back | 35 |
|---|
| 2.1 The University Waits: People and Places | 35 |
| 2.2 The Moston Team Gets to Work | 40 |
| 2.3 The New Computing Machine Laboratory | 45 |
| 2.4 The Giant Arrives | 46 |
| 2.5 The Laboratory Prepares for Serious Users | 50 |
| 2.6 External Users Arrive | 52 |
| 2.7 Applications in Science, Engineering and Commerce | 55 |
| 2.8 Music, Games and Romance | 57 |
| 2.9 Getting Serious | 61 |
| References | 62 |
| 3 Canada Calling: Toronto Gets a Mark I | 63 |
|---|
| 3.1 The Ministry of Supply Needs Some Computers | 63 |
| 3.2 The Canadian Computing Scene | 65 |
| 3.3 UTEC: Toronto s Home-Grown Computer | 68 |
| 3.4 Toronto Orders a Ferranti Computer | 70 |
| 3.5 FERUT s Sea Voyage from Manchester to Toronto | 73 |
| 3.6 Continuing Links with Manchester | 76 |
| 3.7 The Saint Lawrence Seaway Calculations | 78 |
| 3.8 FERUT in Action | 80 |
| 3.9 The End of FERUT | 83 |
| References | 84 |
| 4 A Star Is Born: Ideas and Upgrades | 86 |
|---|
| 4.1 The Tin Hut | 86 |
| 4.2 John Bennett Calls for Change | 91 |
| 4.3 Reactions from Chorlton-on-Medlock and Cheltenham | 92 |
| 4.4 Christopher Strachey s Rocket | 94 |
| 4.5 Moston s Star Twinkles | 97 |
| 4.6 London s Star: A Different Galaxy | 100 |
| References | 106 |
| 5 Into the Market | 107 |
|---|
| 5.1 The Players and the Stage | 108 |
| 5.2 Indecisions and the Three MOS Installations | 110 |
| 5.3 The Wider Market: NRDC s Encouragement | 111 |
| 5.4 The Dutch and the Italians Come Calling | 115 |
| 5.5 The Competition | 117 |
| 5.6 Ferranti s Aerospace Sales Efforts | 120 |
| 5.7 Commercial Data-Processing | 124 |
| 5.8 The Drift Away from Moston | 129 |
| References | 133 |
| 6 The AVRO Mark I* Installation at Chadderton | 134 |
|---|
| 6.1 A. V. Roe at Chadderton, Manchester | 134 |
| 6.2 Avro s Computing Environment, Digital and Analogue | 135 |
| 6.3 Personal Anecdotes of Computing at Chadderton | 138 |
| 6.4 The Silent Slave | 143 |
| 6.5 System Software and Applications Programs | 145 |
| 6.6 The End of the Ferranti Mark I* at Avro | 146 |
| 6.7 What came next at Chadderton and Woodford? | 151 |
| References | 153 |
| 7 The Mark I* at Armstrong Siddeley, Ansty, Coventry | 154 |
|---|
| 7.1 Reluctance at Armstrong Siddeley Motors | 154 |
| 7.2 Enthusiasm Grows | 155 |
| 7.3 Installation and Maintenance | 157 |
| 7.4 The Programmers at Armstrong Siddeley | 161 |
| 7.5 Integrating Computing Within the Company s Activities | 163 |
| 7.6 Applications | 164 |
| 7.7 Acquiring a Second Mark I* | 166 |
| 7.8 What Came Next? | 168 |
| References | 170 |
| 8 The Ferranti Mark I* Installation in Amsterdam | 171 |
|---|
| 8.1 KSLA, the Shell Company s Laboratories in Amsterdam | 171 |
| 8.2 Shell s Search for a Digital Computer | 172 |
| 8.3 The MIRACLE Arrives | 175 |
| 8.4 MIRACLE Gets to Work and Expands | 180 |
| 8.5 Lidy s Story | 185 |
| 8.6 The End of MIRACLE and What Followed | 189 |
| References | 192 |
| 9 The Ferranti Mark I* Installation in Rome | 193 |
|---|
| 9.1 The Italian Scenario | 193 |
| 9.2 INAC and FINAC in Rome | 194 |
| 9.3 FINAC at Work | 200 |
| 9.4 The Wider Picture | 206 |
| 9.5 How Did It All End? | 207 |
| References | 209 |
| 10 GCHQ Cheltenham s Mark I* | 210 |
|---|
| 10.1 US and UK SIGINT at the Start of the Cold War | 210 |
| 10.2 The Possibilities of General-Purpose Computers | 212 |
| 10.3 Comparing ATLAS and ABNER with the Ferranti Mark I* | 216 |
| 10.3.1 The ERA ATLAS Project | 216 |
| 10.3.2 The ASA ABNER Project | 217 |
| 10.3.3 Technical Comparisons of the Three Computers | 219 |
| 10.4 GCHQ s Links with UK Industry, Especially Ferranti Ltd | 221 |
| 10.5 Delivery of CLEOPATRA, GCHQ s Ferranti Mark I* | 224 |
| 10.6 The Possible Applications of CLEOPATRA | 227 |
| 10.7 Comparative Rates of Computation: Oedipus | 230 |
| 10.8 What Followed CLEOPATRA at Cheltenham? | 231 |
| References | 232 |
| 11 The Mark I* at the Armaments Research Development Establishment, Fort Halstead | 234 |
|---|
| 11.1 Armaments Research, Pre-war and Post-war | 234 |
| 11.2 Arranging the Purchase of a Computer for Fort Halstead | 235 |
| 11.3 Installation of AMOS | Early Computing Activity |
| 11.4 The Maturing Applications of AMOS | 239 |
| 11.5 COSMOS, A Compatible Successor to AMOS | 241 |
| 11.6 Into the 1980s | 245 |
| References | 246 |
| 12 The Mark I* at the Atomic Weapons Research Establishment, Aldermaston | 247 |
|---|
| 12.1 Preparing for the UK s Nuclear Deterrent | 247 |
| 12.2 Aldermaston Acquires a Mark I* | 248 |
| 12.3 The End of the Mark I* at Aldermaston | 252 |
| 12.4 What Came Next? the Supercomputer Race | 252 |
| 12.5 Software Activity at AWRE | 254 |
| References | 257 |
| 13 What Came Next? | 258 |
|---|
| 13.1 The New Life at Dover Street | 258 |
| 13.2 The Computer Becomes User-Friend
|