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devlian [24]
2 years ago
7

The Crow’s foot symbol with two vertical parallel lines indicates _____ cardinality.a. (0,N)b. (1,N)c. (1,1)d. (0,1)

Computers and Technology
1 answer:
KATRIN_1 [288]2 years ago
5 0

The Crow’s foot symbol with two vertical parallel lines indicates option  c. (1,1) cardinality.

<h3>What is Symbols in crow's foot notation?</h3>

Crow's foot diagrams is one that stands for entities as boxes, and its association as lines that exist between the boxes.

Note that different shapes at the ends of these lines stands for the relative cardinality of the relationship and thus The Crow’s foot symbol with two vertical parallel lines indicates option  c. (1,1) cardinality.

Learn more about notation from

brainly.com/question/1750038

#SPJ1

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Answer:

Cleaning the fan

Explanation:

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3 years ago
A laptop computer has two internal signals: An unplugged signal, which is '1' if the laptop's power supply is connected, and '0'
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Answer:

The correct usage is a NOR gate which is indicated in the explanation.

Explanation:

The truth table for the given two signals, namely

p=unplugged signal

q=low battery signal

can  form a truth table of following form

Here p has 2 states

1 if the power supply is connected

0 otherwise

Similarly q has 2 states

0 if the battery has reached almost zero state

1 otherwise

As the condition for the Hibernate Signal is given as to only activate when the battery is low and the power supply is not connected. This indicate that the value of Hibernate signal should be 1 when both p and q are 0.

Using this condition, the truth table is formed as

unplugged signal | low battery signal |  Hibernate Signal

            0               |                 0             |             1

            0               |                 1              |             0

            1                |                 0             |             0

            1                |                 1              |             0

Now the truth table of NOR is given as

a    |     b    |  a or b   |   ~(a or b)

0    |     0    |      0      |        1

0    |     1     |      1       |        0

1     |     0    |      1       |        0

1     |     1     |      1       |        0

This indicates that the both truth tables are same thus the NOR gate is to be used for this purpose.

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Given an input array of strings (characters) s, pick out the second column of data and convert it into a column vector of data.
hodyreva [135]

Answer:

Consider the following code.

Explanation:

save the following code in read_and_interp.m

 

function X = read_and_interp(s)

[m, n] = size(s);

X = zeros(m, 1);

for i = 1:m

if(str2num(s(i, 2:5)) == 9999)

% compute value based on previous and next entries in s array

% s(i, 2:5) retrieves columns 2-5 in ith row

X(i,1) = (str2num(s(i-1 ,2:5)) + str2num(s(i+1,2:5)))/2;

else

X(i,1) = str2num(s(i,2:5));

end

end

end

======================

Now you can use teh function as shown below

s = [ 'A' '0096' ; 'B' '0114' ; 'C' '9999' ; 'D' '0105' ; 'E' '0112' ];

read_and_interp(s)

output

ans =

96.000

114.000

109.500

105.000

112.000

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Answer:

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Explanation:

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3 0
3 years ago
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