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atroni [7]
3 years ago
10

This operating system was used by individual computers an required users to type commands

Computers and Technology
1 answer:
nika2105 [10]3 years ago
7 0
Hey there!

The operating system that functions from typing commands is called a Command–Line–Based OS. Examples of this type of OS include UNIX and MS–DOS made by Microsoft. These features white or green text on a black screen and were primarily meant for professionals who had to learn lots of commands rather than everyday users. 

Hope this helped you out! :-)
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harkovskaia [24]

Answer:

The function in Python is as follows:

def digitSum( n ):

if n == 0:

 return 0

if n>0:

    return (n % 10 + digitSum(int(n / 10)))

else:

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Explanation:

This defines the method

def digitSum( n ):

This returns 0 if the number is 0

<em> if n == 0: </em>

<em>  return 0 </em>

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<em> if n>0: </em>

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<em> else: </em>

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Answer:

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       System.out.println("");

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}

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