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Mkey [24]
3 years ago
5

Q.No.3 b. (Marks 3)

Computers and Technology
1 answer:
Vilka [71]3 years ago
7 0

Answer:

The change in complex systems can be explained according to the relationship of the environment where the system is implemented.

The system environment is dynamic, which consequently leads to adaptation to the system, which generates new requirements inherent to changes in business objectives and policies. Therefore, changing systems is necessary for tuning and usefulness so that the system correctly supports business requirements.

An example is the registration of the justification of the requirements, which is a process activity that supports changes in the system so that the reason for including a requirement is understood, which helps in future changes

Explanation:

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Answer:

binary computer natural language

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3 years ago
Write a GUI-based program that allows the user to open, edit, and save text files. The GUI should include a labeled entry field
Korvikt [17]

to create a simple notepad in Python using Tkinter. This notepad GUI will consist of various menu like file and edit, using which all functionalities like saving the file, opening a file, editing, cut and paste can be done.

Now for creating this notepad, Python 3 and Tkinter should already be installed in your system. You can download suitable python package as per system requirement. After you have successfully installed python you need to install Tkinter (a Python’s GUI package).

Use this command to install Tkinter :

pip install python-tk

Importing Tkinter :

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import tkinter  

import os  

from tkinter import *

 

# To get the space above for message  

from tkinter.messagebox import *

 

# To get the dialog box to open when required  

from tkinter.filedialog import *

Note : messagebox is used to write the message in the white box called notepad and filedialog is used for the dialog box to appear when you are opening file from anywhere in your system or saving your file in a particular position or place.

 

Adding Menu :

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# Add controls(widget)  

 

self.__thisTextArea.grid(sticky = N + E + S + W)  

 

# To open new file  

self.__thisFileMenu.add_command(label = "New",  

                               command = self.__newFile)  

 

# To open a already existing file  

self.__thisFileMenu.add_command(label = "Open",  

                               command = self.__openFile)  

 

# To save current file  

self.__thisFileMenu.add_command(label = "Save",  

                               command = self.__saveFile)  

 

# To create a line in the dialog  

self.__thisFileMenu.add_separator()  

 

# To terminate  

self.__thisFileMenu.add_command(label = "Exit",  

                               command = self.__quitApplication)  

self.__thisMenuBar.add_cascade(label = "File",  

                              menu = self.__thisFileMenu)  

 

# To give a feature of cut  

self.__thisEditMenu.add_command(label = "Cut",  

                               command = self.__cut)  

 

# To give a feature of copy  

self.__thisEditMenu.add_command(label = "Copy",  

                               command = self.__copy)  

 

# To give a feature of paste  

self.__thisEditMenu.add_command(label = "Paste",  

                               command = self.__paste)  

 

# To give a feature of editing  

self.__thisMenuBar.add_cascade(label = "Edit",  

                              menu = self.__thisEditMenu)  

 

# To create a feature of description of the notepad  

self.__thisHelpMenu.add_command(label = "About Notepad",  

                               command = self.__showAbout)  

self.__thisMenuBar.add_cascade(label = "Help",  

                              menu = self.__thisHelpMenu)  

 

self.__root.config(menu = self.__thisMenuBar)  

 

self.__thisScrollBar.pack(side = RIGHT, fill = Y)  

 

# Scrollbar will adjust automatically  

# according to the content  

self.__thisScrollBar.config(command = self.__thisTextArea.yview)  

self.__thisTextArea.config(yscrollcommand = self.__thisScrollBar.set)  

With this code we will add the menu in the windows of our notepad and will add the things like copy, paste, save etc, to it.

Explanation:

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2 years ago
Could anyone beat my typing?<br><br> https://keyma.sh/custom/33K7C
insens350 [35]

Answer:

This should not be typed in brainly. Brainly is for answering questions

Explanation:

8 0
3 years ago
In step 4 of the CSMA/CA protocol, a station that successfully transmits a frame begins the CSMA/CA protocol for a second frame
DerKrebs [107]

Answer:

There could be a collision if a hidden node problem occurs.

Explanation:

CSMA/CA(carrier sense multiple access/ collision avoidance) is a multiple access method in wireless networking, that allows multiple node to transmit. Collision avoidance of this method is based on preventing signal loss or downtime as a result of collision of transmitting multi signals.

If a node at step 4(transmit frame) sends the first frame, the node still needs to send a RTS(request to send) and to receive a Clear to send (CTS) from the WAP, the is to mitigate the issue of hidden node problem as all frame are treated as unit, so other listening nodes, not detected would seek to connect and transmit as well.

5 0
3 years ago
Create the setStyles() function using the commands listed in the steps below. Christine wants one of five fancy style sheets to
jolli1 [7]

Answer:

Hi there! This can be implemented in a simple Python function which uses the "random" module to generate the number.

Explanation:

Using Python as the languge, we can write a the below code in a file called styles.py. The first line imports the randint function from the "random" module. The setStyles() function declares an array or 5 elements (here I have just used numbers but these could be string names of the stylesheets as well). Next, styleNum is assigned the random number and the associated stylesheet is selected from the array of stylesheets.

styles.py

from random import randint

def setStyles():

   stylesheets = [1,2,3,4,5];

   styleNum = randint(1,5);

   stylesheet = stylesheets[styleNum];

   print(stylesheet);

setStyles();

3 0
3 years ago
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