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BartSMP [9]
3 years ago
9

You recently started working part-time in a retail store, and are learning about the reading 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:
slega [8]3 years ago
5 0

Answer:

Laser beams.

Explanation:

Recently, that user has began functioning part-time in such a retail outlet, as well as he discovering regarding his shop's learning tools. During checkout, his shop requires the code scanner to scan objects.  

The barcode scanner uses laser beam technologies because the laser beam is rapidly running over the QR code or barcode back-and-forth, or executing the sequence. The sensors well into the system display the mirrored beam patterns that decrypts the barcode.

So, the following are the reason that describes the answer is correct according to the scenario.

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6. Write a program that can multiply an n x m matrix and m x n matrix together: The input specifications are these: Read n and m
Whitepunk [10]

Answer:

see explaination

Explanation:

#include <stdio.h>

#include <malloc.h>

void matrix_mult(int **m1, int **m2, int **m3, int n, int m) {

int i, j, k, sum=0;

for(i = 0; i < n; ++i) {

for(j = 0; j < n; ++j) {

sum = 0;

for(k = 0; k < m; ++k) {

sum += m1[i][k] * m2[k][j];

}

m3[i][j] = sum;

}

}

}

int main() {

int n, m, i, j;

int **m1, **m2, **m3;

printf("Enter number of rows: ");

scanf("%d", &n);

printf("Enter number of columns: ");

scanf("%d", &m);

m1 = malloc(sizeof(int *) * n);

m2 = malloc(sizeof(int *) * m);

m3 = malloc(sizeof(int *) * n);

for(i = 0; i < m; ++i) {

m1[i] = malloc(sizeof(int) * m);

m2[i] = malloc(sizeof(int) * n);

m3[i] = malloc(sizeof(int) * n);

}

printf("Enter first matrix\n");

for(i = 0; i < n; ++i) {

for(j = 0; j < m; ++j) {

scanf("%d", &(m1[i][j]));

}

}

printf("Enter second matrix\n");

for(i = 0; i < m; ++i) {

for(j = 0; j < n; ++j) {

scanf("%d", &(m2[i][j]));

}

}

matrix_mult(m1, m2, m3, n, m);

printf("product is\n");

for(i = 0; i < n; ++i) {

for(j = 0; j < n; ++j) {

printf("%d ", m3[i][j]);

}

printf("\n");

}

printf("Enter first matrix: ");

return 0;

}

7 0
3 years ago
Complete the sentence.<br> Python is a_____<br> level language compared to bytecode.
Crazy boy [7]

Answer:

High

Explanation:

Python is high level; Bytecode is intermediate

5 0
3 years ago
Read 2 more answers
Write a function that accepts a positive random number as a parameter and returns the sum of the random number's digits. Write a
Luba_88 [7]

Answer:

Explanation:

The following Python program has a function called addDigits which takes a number as a parameter and returns the sum of the digits. Then the program creates a loop that keeps creating random numbers between 222 and 1000 and divides it by the value returned from the function addDigits. If the remainder is 0 is prints out a statement and breaks the loop, ending the program. The picture below shows the output of the program.

import random

def addDigits(num):

   sum = 0

   for x in str(num):

       sum += int(x)

   return sum

sum = addDigits(random.randint(222, 1000))

while True:

   myRandomNum = random.randint(2, 99)

   if (sum % myRandomNum) == 0:

       print("No remainder between: " + str(sum) + " and " + str(myRandomNum))

       break

4 0
2 years ago
The icons to insert footnotes and endnotes in a document are located in the _____ tab.
ad-work [718]

Answer:

Answer: Reference

Explanation:

4 0
3 years ago
Who is the fan of Techno gamerz and Total gaming
Helen [10]
Over here lol- it’s pretty cool
6 0
3 years ago
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