Answered: if distance is a number of two digits…

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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build the circuit and write the code to do the following:

- connect an ultrasonic (pins 5,6), servo motor (3) and two LEDs (2,4) and a 7seg (7,8,9,10,11,12,13)
- read the distance using the ultrasonic sensor

- if and if only the distance is between 40cm and 320cm, write the distance as the following:

if distance is a number of two digits (ex: 85) display the number 8 on 7-seg and turn on first LED.
if the distance is a number of 3 digits (ex : 310) display the number 3 on 7-seg and turn on two LEDs.
turn servo to 90 degree.

else, if the distance out of range (40-320) , display a single bar on 7-seg and turn of LEDs, then turn servo to 0 degree.

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