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Soloha48 [4]
3 years ago
11

Critical Thinking Questions Case 7-1 ​ You recently started working part-time in a retail store, and are learning about the read

ing devices your store uses. Your store uses a bar code reader to process items during checkout. What type of technology does the bar code reader use?
Computers and Technology
1 answer:
DerKrebs [107]3 years ago
6 0

Answer: Laser Beams

Explanation:

  The laser beam is one of the type of technology that helps in amplifying the light by using the laser principle Stimulated emission in the laser. The word "LASER" is stand for the Light amplification by stimulated emission of radiation.  

The laser is one of the device that emitted the coherent light in the form of beam rays that is propagate only in one direction. The following are the laser beam technology are as follows:

  • Bar code reader
  • Laser surface modification  
  • Information processing
  • Laser range  

Therefore, Laser beam is the correct answer.

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The program is

num = int(input("Enter Numerator "))

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&div;

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<h3>How to divide in computer programming?</h3>

Perl code

use strict;

my $first = 15;

my $second = 5;

my $answer = $first / $second;

print "You get $answer if you divide $first by $second";

When the script above is run, it displays "You get 3 if you divide 15 by 5" on the screen.

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Pamela finds that she is constantly spelling the word “color” as “colour” when she is typing. Even though this is how the word i
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Write the definition of a method dashedLine, with one parameter, an int. If the parameter is negative or zero, the method does n
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Answer:

import java.util.Scanner;

public class DashLine {

public static void main(String[] args) {

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int n;

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* Creating an Scanner class object which is used to get the inputs

* entered by the user

*/

Scanner sc = new Scanner(System.in);

// Getting the input entered by the user

System.out.print("Enter a number :");

n = sc.nextInt();

// calling the method by passing the user entered input as argument

dashedLine(n);

}

//This method will print the dashed line for number greater than zer

private static void dashedLine(int n) {

if (n > 0) {

for (int i = 1; i <= n; i++) {

System.out.print("-");

}

System.out.println();

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Explanation:

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3 years ago
The file includes 4993 tweets including the keyword 'election'. Each tweet is represented in a separate line. Write a program to
Likurg_2 [28]

Answer:

import re

with open("../../Downloads/Tweets.txt","r", encoding="utf-8") as tweets:

   myfile = tweets.readlines()

   for item in myfile:

       item = item.rstrip()

       mylist = re.findall("^RT (.*) ", item)

       if len(mylist) !=0:

           for line in mylist:

               if line.count("#") >=1:

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Explanation:

The python source code filters the document file "Tweets" to return all tweets with a hashtag flag, discarding the rest.

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Construct an algorithm to print the first 20 numbers in the Fibonacci series (in mathematics) thanks
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Answer:

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1+1=2

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Explanation:

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#include <bits/stdc++.h>

using namespace std;

 

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   if (n < 1)

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// Driver Code

int main()

{

   printFibonacciNumbers(7);

   return 0;

}

 

8 0
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