The rear lights of a car are to be controlled by digital logic. There is a single
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Question:
The rear lights of a car are to be controlled by digital logic. There is a single lamp in each of the
rear lights:
◦ Inputs
▪ LT: left turn switch—causes blinking of left side lamp
▪ RT: right turn switch—causes blinking of right side lamp
▪ EM: emergency lasher switch—causes blinking of both lamps
▪ BR: brake applied switch—causes both lamps to be on
▪ BL: blinking signal with 1 Hz frequency
◦ Outputs
▪ LR: power control for left rear lamp
▪ RR: power control for right rear lamp
(a) Write the equations for LR and RR. Assume that BR overrides EM and that LT and RT override
BR.
(b) Implement each function LR (BL, BR, EM, LT) and RR (BL, BR, EM, RT) with a 4–to–16-line
decoder and external OR gates
Related Book For
Financial Algebra advanced algebra with financial applications
ISBN: 978-0538449670
1st edition
Authors: Robert K. Gerver
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