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Consumer Electronics
book

Consumer Electronics

by S. P. Bali
November 2007
Intermediate to advanced
736 pages
46h 32m
English
Pearson India
Content preview from Consumer Electronics
ELECTRONIC IGNITION LOCK SYSTEM

In the electronic ignition lock system to prevent drunken driving, the basic idea is to flash an arbitrary sequence of letters on a screen very briefly and then require the driver to punch a set of buttons in the same order. Tests have shown that better discrimination between drivers who are drunk and those who simply have poor retention of visual images is obtained by requiring the task to be performed in several short sequences rather than one long sequence. On this basis the following scheme is proposed. There will be four buttons labeled A, B, C, and D and three legal sequences as listed in Fig. 49.4 (a).

When the system is turned on Sequence 1 will be displayed after which the driver must punch the buttons ...

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Publisher Resources

ISBN: 9789332503304