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Flura [38]
2 years ago
11

What is an operating system?​

Computers and Technology
2 answers:
Artemon [7]2 years ago
5 0

Answer:

An OS software that acts as an interface between the computer components of the hardware and the user. At least one operating system must be available to each computer system to run other programs. Applications such as browsers, the MS Office, notepad games need a certain environment in which to execute their tasks.

Explanation:

Batch Operating System:-

Each user prepares his/her job on an offline device such as a punch card in this type of operating system and sends it to the computer operator.

Multi-Tasking:-

Timesharing allows people located on a different terminal(shell) to simultaneously operate a single computer system. The time of the processor (CPU) shared between several users is called time-sharing.

Real-time OS:-

An interval of time for processing and reacting to inputs in real-time is very small. For example, Real-time OS is an example of military software systems, spatial software systems.

Network Operating System:-

The operating network system is running on a server. It offers the ability to manage data, users, groups, security, apps, and other networking features.

erica [24]2 years ago
3 0

Answer:

hello ✌

Explanation:

A low- level software that supports a computer's basic functions, such as scheduling tasks and controlling peripherals.

hope it's helpful for you!

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A large computer software firm promised a client that it could deliver a new operating system on a tight deadline and put Keith
daser333 [38]

Answer:

The correct option is b. He is a good communicator , he is a motivator, he can keep a secret and lastly he can quickly learn about operating systems.

Explanation:

Based on the information given what best explains why Keith was in charge of the project and was qualified for such a position was that he has a great Communication skills because he communicate and relate with customers in a great ways and he is a good listener.

Secondly he posses confidentiality skills which is a very important skills for a business or an organization.

Lastly he his a fast learner who has the ability to quickly learn and know about everything that has to do with an operating system which is the reason why he was qualified to be in such position and was put in charge of the project based on all the important skills mentioned above that he possess.

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Please check my answer! (Java)
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Yep. 4 rows of 5 stars each.

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3 years ago
Write a function wordcount() that takes the name of a text file as input and prints the number of occurrences of every word in t
o-na [289]

Answer:

I am writing a Python program. Let me know if you want the program in some other programming language.        

import string  #to use string related functions

def wordcount(filename):  # function that takes a text file name as parameter and returns the number of occurrences of every word in file

   file = open(filename, "r")  # open the file in read mode

   wc = dict()  # creates a dictionary

   for sentence in file:  # loop through each line of the file

       sentence = sentence.strip()  #returns the text, removing empty spaces

       sentence=sentence.lower() #converts each line to lowercase to avoid case sensitivity

       sentence = sentence.translate(sentence.maketrans("", "", string.punctuation))  #removes punctuation from every line of the text file

       words = sentence.split(" ")  # split the lines into a list of words

       for word in words:  #loops through each word of the file

           if len(word)>2:  #checks if the length of the word is greater than 2

               if word in wc:  # if the word is already in dictionary

                   wc[word] = wc[word] + 1  #if the word is already present in dict wc then add 1 to the count of that word

               else:  #if the word is not already present

                   wc[word] = 1  # word is added to the wc dict and assign 1 to the count of that word                

   for w in list(wc.keys()):  #prints the list of words and their number of occurrences

       print(w, wc[w])  #prints word: occurrences in key:value format of dict        

wordcount("file.txt") #calls wordcount method and passes name of the file to that method

Explanation:

The program has a function wordcount that takes the name of a text file (filename) as parameter.

open() method is used to open the file in read mode. "r" represents the mode and it means read mode. Then a dictionary is created and named as wc. The first for loop, iterates through each line (sentence) of the text file. strip() method is used to remove extra empty spaces or new line character from each sentence of the file, then each sentence is converted to lower case using lower() method to avoid case sensitivity. Now the words "hello" and "Hello" are treated as the same word.

sentence = sentence.translate(sentence.maketrans("", "", string.punctuation))  statement uses two methods i.e. maketrans() and translate(). maketrans() specifies the punctuation characters that are to be deleted from the sentences and returns a translation table. translate() method uses the table that maketrans() returns in order to replace a character to its mapped character and returns the lines of text file after performing these translations.

Next the split() method is used to break these sentences into a list of words. Second for loop iterates through each word of the text file. As its given to ignore words of length 2 or less, so an IF statement is used to check if the length of word is greater than 2. If this statement evaluates to true then next statement: if word in wc:   is executed which checks if the word is already present in dictionary. If this statement evaluates to true then 1 is added to the count of that word. If the word is not already present  then the word is added to the wc dictionary and 1 s assigned to the count of that word.

Next the words along with their occurrences is printed. The program and its output are attached as screenshot. Since the frankenstein.txt' is not provided so I am using my own text file.

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Answer:

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Explanation: less difficult (C)

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