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Kitty [74]
2 years ago
7

What is an Operating System ??

Computers and Technology
1 answer:
NikAS [45]2 years ago
3 0




Hi Pupil Here's Your Answer :::




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An operating system is a system software, that after being initially loaded into the computer by a good program, manages all the other programs in a computer.

The application programs make use of the operating system by making request for services through a different Application Program Interface (API). In addition, users can interact directly with operating systems through a user interface such as command language or Graphical User Interface(GUI).


Functions Performed by the OS :


♤ The operating system acts as an interface between the computer hardware and the user.

♤ It manages computer's memory.

♤ It handles interrupts.

♤ It schedules the jobs.

♤ It manages Input/Output devices.


All major computer platforms (hardware and software) required and sometimes include an Operating System. Linux, Windows, Mac, VMS, OS/400 X, and z/OS are examples of operating systems.




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Hope this helps ........ ☺☺
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Extend to also calculate and output the number of 1 gallon cans needed to paint the wal. Hint: Use a math function to round up t
Crank

Answer:

Here is the Python program:

import math #import math to use mathematical functions

height = float(input("Enter wall height (feet): ")) #prompts user to enter wall height and store it in float type variable height

width = float(input("Enter wall width (feet): ")) #prompts user to enter wall width and store it in float type variable width

area = height *width #computes wall area

print('Wall area: {} square feet'.format(round(area))) #displays wall area using round method that returns a floating-point number rounded

sqftPerGallon = 350 #sets sqftPerGallon to 350

paintNeeded = area/ sqftPerGallon #computes needed paint

print("Paint needed: {:.2f} gallons".format(paintNeeded)) #displays computed paint needed up to 2 decimal places

cansNeeded = int(math.ceil(paintNeeded)) #computes needed cans rounding the paintNeeded up to nearest integer using math.ceil

print("Cans needed: {} can(s)".format(cansNeeded)) #displays computed cans needed

colorCostDict = {'red': 35, 'blue': 25, 'green': 23} #creates a dictionary of colors with colors as key and cost as values

color = input("Choose a color to paint the wall: ") #prompts user to enter a color

if color in colorCostDict: #if the chosen color is present in the dictionary

    colorCost = colorCostDict.get(color) #then get the color cost from dictionary and stores it into colorCost using get method that returns the value(cost) of the item with the specified key(color)

    cost = cansNeeded * colorCost #computes the cost of purchasing paint of specified color per cansNeeded

  print("Cost of purchasing {} paint: ${}".format(color,colorCostDict[color])) #displays the real cost of the chosen color paint

print("Cost of purchasing {} paint per {} gallon can(s): ${}".format(color,cansNeeded, cost)) #displays the cost of chosen color paint per cans needed.

Explanation:

The program first prompts the user to enter height and width. Lets say user enter 20 as height and 50 as width so the program becomes:

Wall area computed as:

area = height *width

area = 20 * 50

area = 1000

Hence the output of this part is:

Wall area: 1000 square feet                                                                                                                     Next program computes paint needed as:

paintNeeded = area/ sqftPerGallon

Since sqftPerGallon = 350 and area= 1000

paintNeeded = 1000 / 350

paintNeeded = 2.86

Hence the output of this part is:

Paint needed: 2.86 gallons

Next program computes cans needed as:      

cansNeeded = int(math.ceil(paintNeeded))

This rounds the computed value of paintNeeded i.e. 2.86 up to nearest integer using math.ceil so,

cansNeeded = 3                                                                  

Hence the output of this part is:

Cans needed: 3 can(s)                                                                                                                            Next program prompts user to choose a color to paint the wall

Lets say user chooses 'blue'

So the program get the cost corresponding to blue color and multiplies this cost to cans needed to compute the cost of purchasing blue paint per gallon cans. So

cost = cansNeeded * colorCost

cost = 3 * 25

cost = 75

So the output of this part is:

Cost of purchasing blue paint per 3 gallon can(s): $75                                                                                        The screenshot of the program along with its output is attached.

5 0
3 years ago
Which of the following is true about binary search. A. It uses binary numbers in its algorithm B. It is slower than sequential s
trapecia [35]

Answer:

<u> A. It uses binary numbers in its algorithm</u>

Explanation:

A Binary search is a type of algorithm designed to look through <em>only </em>a sorted array of data for a particular item.

It is<em> more efficient (faster) </em>than sequential search since the algorithm doesn't have to look up the entire array of data, but simply repeatedly divide in half the section of the array that could contain the searched item.

4 0
3 years ago
An argument does not always have to be made in words. A piece of music
mixas84 [53]

Answer:

B. emotional

Explanation:

An emotional argument. An argument does not always have to be made in words.

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3 years ago
Which frequency will 802.11n work on if on a single-link network?
Allushta [10]

802.11n can function in "mixed mode" on the 2.4 GHz frequency, with a theoretical maximum speed of 300 Mbps, or on the 5 GHz frequency.

<h3>What do you mean by frequency?</h3>

In the case of electrical current, frequency is the number of times a sine wave repeats or completes, a positive-to-negative cycle.

802.11n can operate in "mixed mode" on the 2.4 GHz frequency, which will support just 802.11b or 802.11g-capable systems but will slow the entire network down to the maximum speed of the earliest standard connected, at a theoretical maximum speed of 300 Mbps.

Learn more about the single-link network:

brainly.com/question/4272298

#SPJ1

8 0
1 year ago
How can a CRM system help communicate issues in the supply chain between customers and drones?
riadik2000 [5.3K]

Answer:

CRM system can help customers about the service supplied.  

Explanation:

CRM stands for Customer Relationship Management and CRM system is a useful tool for communicating with customers.

CRM can keep the data about the order provided by the customer and has updated info about its status.

For example, if the customer of a logistics company wants to know where his/her order is, customer represantative can give up-to-date info about the order where abouts. Or the customer directly uses web to check the status of the order.

All these service can be provided by a CRM system, since drones can send its location to CRM systems.

8 0
3 years ago
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