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Reptile [31]
2 years ago
7

A square QR code contains 40×40 tiny squares (pixels) where each tiny square represents a 0 or a 1. Calculate how many bytes of

data can be stored on the QR code​
Computers and Technology
1 answer:
Kamila [148]2 years ago
7 0

Answer:

Explanation:

QR Codes are made of multiple rows and columns. The combination of these rows and columns makes a grid of modules (squares). There can be a maximum of 177 rows and 177 columns which means the maximum possible number of modules is 31,329. With the eye, these are just small squares and mean very little, but the exact arrangement of those modules allows the QR Code to encode its data. This means that, unlike traditional barcodes which are 1 dimensional and use 1 row of lines, QR Codes use 2 dimensions which allows them to store a lot more data in the same area of space.

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We discussed in class the differences between Ruby and a language like Java. Based on our discussions, when do you feel it would
EleoNora [17]

Answer:

Ruby

It’s not a secret that our company places a bet on this interpreted scripting language created by Yukihiro Matsumoto in the far 1995. A bunch of deep-rooted technologies like Smalltalk, Python, Perl, Ada, C++, and others had an impact on shaping Ruby’s syntax and features. As a result, we got a technology known for elegant and expressive coding, as well as increased flexibility and productivity of development. It means that engineers take pleasure in writing code with Ruby and are not restricted in their vision on how to execute one thing or another.

Java

Despite Railsware’s unhidden preference towards Matsumoto’s brainchild, Java is also a part of our team’s arsenal. For example, we leveraged it together with other technologies within the Philips Directlife project. That’s to say, we know both of them and are happy to use whichever language best suits the task at hand.

In a sign of numerous Java and Ruby differences to be described a bit later, there is one undisputed similarity – they were born in the same year. Nevertheless, since then, Java has come through 11 versions with Java SE 11 as the latest one (compared to the Ruby’s latest release of 2.6.0). The technologies that influenced the creation of Java include C++, Ada 83, Object Pascal and others.

The TIOBE index shows that this compiled programming language overcame C in ranking and holds the first position as of the end of 2018. Moreover, it is a primary technology for Android native app development, which by the way was recently enhanced with Kotlin. Another facet of Java is that it is also an ecosystem of tools including Java Development Kit (JDK) for writing/running/compiling Java code, Java Virtual Machine (JVM) for running software built with Java and JVM languages within the same infrastructure to some degree of interoperability (for example, Kotlin for expressiveness and conciseness, Scala for functional programming, etc.), and Java Runtime Environment (JRE) for running Java apps. The basic points why developers opt for this technology are its reliability, platform independence, and ease of use.

Explanation:

The readers of our blog have already had a chance to get to know the duel of Ruby vs. PHP, as well as the combat Python vs. Ruby vs. Node.js. Today, we have Java vs. Ruby in turn.

Traditionally, we’re going to look at both technologies from a product owner’s perspective, which means learning not only technical differences between the languages, but also their actual use across different projects. Here we go.

Warm-up

Before any competition, the contestants need to warm up. It also happens that this term is used by one of the wrestlers, Java, for the lazy class loading of Java Virtual Machine. So, let’s not step out of line and have the competitors spiffed up to the battle.

Ruby

It’s not a secret that our company places a bet on this interpreted scripting language created by Yukihiro Matsumoto in the far 1995. A bunch of deep-rooted technologies like Smalltalk, Python, Perl, Ada, C++, and others had an impact on shaping Ruby’s syntax and features. As a result, we got a technology known for elegant and expressive coding, as well as increased flexibility and productivity of development. It means that engineers take pleasure in writing code with Ruby and are not restricted in their vision on how to execute one thing or another.

At the same time, this technology cannot be called popular. According to the TIOBE index as of December 2018, it is ranked 17th. Nevertheless, the language is not dying and keep afloat with the 3.0 version expected to be released in 2020. To sum up, Ruby allows programmers to enjoy what they do and be productive at once by following the principle of least astonishment.

Ruby key features

Apart from comparing Ruby to Java, let’s take a look at some key things one should know about this gem of a language.

Open-source

Interpreted language

Multi-platform

Dynamic + duck typing

Has a smart garbage collector

Everything including methods, numbers and variable is an object

You can embed Ruby into HTML

High scalability

Applicable for writing CGIs, building web and intranet apps

Support of different GUI tools including OpenGL, Tcl/Tk, and GTK

Support of Sybase, Oracle, MySQL, and DB2 connection

4 0
4 years ago
PLS HELPPPPPP According to O*NET, what are the three most common levels of education earned by Clergy?
Evgen [1.6K]

Answer:

bachelor’s degree

master's degree

post-baccalaureate certificate

Explanation:

Edited my answer

3 0
3 years ago
Read 2 more answers
Def shared_motif(dna_list):
krok68 [10]

Answer:

Explanation:

The following code is written in Python, the function creates various nested loops to loop through each individual string comparing letter by letter in order to find the longest common substring. Finally, returning the substring itself.

def shared_motif(dna_list):

   substr = ''

   if len(dna_list) > 1 and len(dna_list[0]) > 0:

       for x in range(len(dna_list[0])):

           for i in range(len(dna_list[0]) - x + 1):

               if i > len(substr) and all(dna_list[0][x:x + i] in y for y in dna_list):

                   substr = dna_list[0][x:x + i]

   return substr

arr = ["GATTACA", "TAGACCA", "ATACA"]

stems = shared_motif(arr)

print(stems)

5 0
3 years ago
What imbalance is fixed by a single right rotation?
slega [8]

Answer:

It balances a tree when a long path exist in the left subtree of the left of the root.

Explanation:

Rotation is an operation which is performed on the binary tree which changes the structure of the binary tree but it does not interfere with the order of elements.

A single right rotation strategy is basically for re balancing the tree.When there is along path which exists in the left subtree of the left of the root.

3 0
3 years ago
How do you properly turn off a computer?
Ugo [173]

Answer:

with the power button or do the sleep or shut down

and by the type of computer

Explanation:

sry if its wrong

have a good day:)

-XxMissNobodyxX

7 0
2 years ago
Read 2 more answers
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