13. Which Windows feature allows users to control software operations by clicking and pointing with a mouse?

1 answer:

8 0

The correct answer is option D.
i.e. graphic user interface allows users to control software operations by clicking and pointing with a mouse.

GUI is a type of interface that allows the user to interact through computer graphics.

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Write a function called ﬁrst_last that takes a single parameter, seq, a sequence. ﬁrst_last should return a tuple of length 2,wh

motikmotik

Answer:

The Python code with the function is given below. Testing and output gives the results of certain chosen parameters for the program

Explanation:

def first_last(seq):

if(len(seq) == 0):

return ()

elif(len(seq) == 1):

return (seq[0],)

else:

return (seq[0], seq[len(seq)-1])

#Testing

print(first_last([]))

print(first_last([1]))

print(first_last([1,2,3,4,5]))

# Output

( )

( 1 , )

( 1 , 5 )

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3 years ago

A _____ is a predefined text format that includes multiple formatting options.

VladimirAG [237]

A style is a predefined text format that includes multiple formatting options.

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3 years ago

1. Build and test D-type Flip-Flop using a built-in SR flip-flop.

GaryK [48]

Answer:

The attached files contain the realization of a D flip-flop from an RS flip-flop. It also contains the truth tables for both kinds of flip-flops

Explanation:

An SR flip flop is like a light switch. Set turns it 'on' and reset turns it 'off'

A D type flip-flop is a clocked flip-flop which has two stable states. A D type flip-flop operates with a delay in input by one clock cycle.

D type flip-flops are easily constructed from an SR flip-flop by simply connecting an inverter between the S and the R inputs so that the input to the inverter is connected to the S input and the output of the inverter is connected to the R input.