| 1. | The slave clocks are connected by wires to the master clock.
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| 2. | Two slightly different master clock-slave clock concepts emerged.
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| 3. | The slave clock would display exactly the same time as the master clock.
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| 4. | Each of the slave clocks had wires that connected to the master clock.
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| 5. | Many slave clocks of these types remain in operation, most commonly in schools.
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| 6. | Slave clocks were much less complicated to manufacture and required little or no servicing.
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| 7. | Synchronized time systems are made up of one master clock and any number of slave clocks.
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| 8. | The network of master and slave clocks was constructed and installed by Charles Shepherd in 1852.
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| 9. | The whole cycle is kept synchronised by a small blade spring on the pendulum of the slave clock.
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| 10. | The multivibrator in the slave clocks to read the data line about 30 �s after the falling edge.
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