1. Elevator: Design a logic circuit that controls an elevator door in a three-story ouilding. The circuit in Figure has 4 inputs. M s a logic signal that indicates when he elevator is moving(M=1) or stopped(M=0).F1, F2 and F3 are floor indicator ignals that are normally LOW, and they go HIGH only when the elevator is positioned at the level of that particular floor. For example, when the elevator is ined up level with the second floor F2=1 and F1=F3=0. The circuit output is the OPEN signal, which is normally LOW and will go HIGH when the elevator door is o be open.(if more than one floor indicator goes HIGH then OPEN signal is considered LOW)

1. Elevator: Design a logic circuit that controls an elevator door in a three-story ouilding. The circuit in Figure has 4 inputs. M s a logic signal that indicates when he elevator is moving(M=1) or stopped(M=0).F1, F2 and F3 are floor indicator ignals that are normally LOW, and they go HIGH only when the elevator is positioned at the level of that particular floor. For example, when the elevator is ined up level with the second floor F2=1 and F1=F3=0. The circuit output is the OPEN signal, which is normally LOW and will go HIGH when the elevator door is o be open.(if more than one floor indicator goes HIGH then OPEN signal is considered LOW)

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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