Page 13 -

243_Legomaster_TOC.qxd 4/18/03 6:48 PM Page xii

xii Contents

Tuning and Testing the Learning Brick Sorter 89
Programming the Learning Brick Sorter 90
Training and Using the Learning Brick Sorter 101
Further Suggestions 102
Summary 103
Masterpiece 3 The LEGO Turing Machine 105
Bill of Materials 106
Introduction 107
The History of the Turing Machine 107
The Original Turing Machine 109
The State Transition Table 110
An Adding Machine 111
The Differences between our LEGO Turing
Machine and an Authentic Turing Machine 113
Building the LEGO Turing Machine 114
The Base 114
The Tape 117
The Direction Control 122
The Direction Control II 126
The Erase Switch 129
The Write Switch 132
The Light Sensor 134
Putting It All Together 136
Programming the Machine 142
Operating the Turing Machine 146
A More Complex Behavior 147
Expanding the System 148
Summary 150

Masterpiece 4 PneumADDic II 151
Bill Of Materials 152
Introduction 153
Pneumatics 154
Digital Computing 157
Boolean Logic 158
The AND Gate 159
The OR Gate 160