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3 years ago

Why were QR codes created

2 answers:

8 0

It's used QR codes in a way that is so useful that it… QR (Quick Response) code is the trademark name for the two dimensional barcode system. It was originally invented in 1994 by Denso Wave, a Toyota subsidiary, as a way to track vehicles as they were assembled, and to scan components at high speeds.

Crank3 years ago

4 0

QR codes were created to make a way for people to easily scan codes to get to a website. So you could scan (example) a movie poster to go to the website that has advertisements and tickets.

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when you select cells in your worksheet and then click the copy button, what happens? select one: a. the formatting is removed f

Amiraneli [1.4K]

Hey there! Hello!

Not sure if you still need this answer, but I'd love to help out if you do.

In terms if Excel Spreadsheet, your answer will be D. A<span> moving dashed line border appears around the cells. What the copy button does is take the contents in your cell(s) and copies them so that you can paste them elsewhere. B and C would apply here if you were cutting the text, which clears whatever you have selected so that you can paste them elsewhere without having to go back and delete it.

I have attached an example of what happens to a cell when you either right click it and press copy, or press ctrl/command+c, which is the keyboard shortcut for copying text or contents.

Hope this helped you out! Feel free to ask me any additional questions if you have any. :-)</span>

4 0

3 years ago

Write a program that first reads in the name of an input file and then reads the file using the csv.reader() method. The file co

DaniilM [7]

Answer:

Here is the Python code.

import csv

inputfile = input("Enter name of the file: ")

count = {}

with open(inputfile, 'r') as csvfile:

csvfile = csv.reader(csvfile)

for line in csvfile:

for words in line:

if words not in count.keys():

count[words] = 1

else:

count[words] + 1

print(count)

Explanation:

I will explain the code line by line.

import csv here the css is imported in order to read the file using csv.reader() method

inputfile = input("Enter name of the file: ") This statement takes the name of the input file from the user

count = {} this is basically a dictionary which will store the words in the file and the number of times each word appears in the file.

with open(inputfile, 'r') as csvfile: This statement opens the inputfile using open() method in read mode. This basically opens the input file as csv type

csvfile = csv.reader(csvfile) This statement uses csv.reader() method to read the csv file contents.

for line in csvfile: This outer for loop iterates through each line of the file

for words in line: This inner loop iterates through each word in the line

if words not in count.keys(): This if condition checks if the word is not in the dictionary already. The dictionary holds key value pair and keys() method returns a list of all the keys of dictionary

count[words] = 1 if the word is not present already then assign 1 to the count dictionary

co unt[words] + 1 if the word is already present in dictionary increment count of the words by 1. Suppose the input file contains the following words:

hello,cat,man,hey,dog,boy,Hello,man,cat,woman,dog,Cat,hey,boy

Then because of co unt[words] + 1 statement if the word appears more than once in the file, then it will not be counted. So the output will be:

{' cat': 1, ' man': 1, ' dog': 1, ' woman': 1, ' Hello': 1, ' hey': 1, ' boy': 1, 'hello': 1, ' Cat': 1}

But if you want the program to count those words also in the file that appear more than once, then change this co unt[words] + 1 statement to:

count[words] = count[words] + 1

So if the word is already present in the file its frequency is increased by 1 by incrementing 1 to the count[words]. This will produce the following output:

{' Cat': 1, ' cat': 2, ' boy': 2, ' woman': 1, ' dog': 2, ' hey': 2, ' man': 2, ' Hello': 1, 'hello': 1}

You can see that cat, boy, dog and hey appear twice in the file.

print(count) This statement prints the dictionary contents with words and their frequencies.

The program with its output is attached.

3 0

3 years ago

When dealing with perspective, _____ lines are used or implied.

iris [78.8K]

Answer:

I'm pretty sure the answer is vanishing lines.

Explanation:

7 0

3 years ago

____ control the way one slide replaces another on-screen during a presentation

Len [333]

I don’t know that one

4 0

3 years ago

Why are large commercial companies interested in developing mobile apps for smartphones?

loris [4]

Because they can make a lot of money if they create a popular application.

7 0

3 years ago