Answered: on four factors such as Presence of…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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A rain predictor circuit is designed based on four factors such as Presence of Cloud(A). Presence of Depression in the seats). Cyclone formation in the sea High Precipitation(D). A threshold is fixed for all the above conditions and if the above factors are above the threshold, that is indicated as logic one and below the threshold is indicated as logic zero. The rain predictor will give a logic zero as output to indicate the probability for rain fall. The following conditions will hold there is a probability for rainfall (a) ID alone is high (b) (If A and Care zero and B and D are high )OR (if A and D are zero and B and C are high) e) B alone is zero (d) If A and B are high and C is zero, then irrespective of the value of D, it will rain (e) If all parameters are high WA alone is zero, the circuit cannot predict whether it will rain or not. (g) For all the other conditions the circuit will predict high. Find out the simplified Product of Sum expression for the rain predictor circuit using Karnaugh map and design the circuit with minimum number of logic gates.

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