In the 1770s Pierre Jaquet-Droz, a Swiss watchmaker, built a mechanical doll (automata) that could write holding a quill pen. By switching the number and order of its internal wheels different letters, and hence different messages, could be produced. In effect, it could be mechanically "programmed" to read instructions. Along with two other complex machines, the doll is at the Musée d'Art et d'Histoire of Neuchâtel, Switzerland, and still operates. COUNT 4
QSN1 What was the profession of Pierre Jaquet-Droz? ANS1 a Swiss watchmaker QSN2 When did Pierre Jaquet-Droz build a mechanical doll that could hold a pen? ANS2 In the 1770s QSN3 Where is the doll Pierre Jaquet-Droz built today? ANS3 Musée d'Art et d'Histoire QSN4 Where is the Musee d-Art et d'Histoire located? ANS4 Neuchâtel, Switzerland