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makkiz [27]
3 years ago
7

What is a variable?

Computers and Technology
1 answer:
aleksandr82 [10.1K]3 years ago
5 0
Answer. D: a value that looks loads when the program runs.


Explanation:

In programming, a variable is a value that can change, depending on conditions or on information passed to the program. Typically, a program consists of instruction s that tell the computer what to do and data that the program uses when it is running.
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A laptop computer has two internal signals: An unplugged signal, which is '1' if the laptop's power supply is connected, and '0'
Brums [2.3K]

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.

6 0
3 years ago
Can you please look through this code and see wants wrong with it? its in python
Ivanshal [37]
I’m confused what are you trying to ask? What is the python?
3 0
3 years ago
Which elements are visible when a user opens a new PowerPoint presentation?
Mariulka [41]

Answer:

The only element visible is the presentation itself.

Explanation:

All of the other options, such as presenter's assistance, is hidden away from the projector, presentation device, etc. You are the only one that can see the window that shows what slide is next, presenter's notes, etc. <u>In other words, whatever you want the audience to see, that is only what they will see and nothing else.</u>

3 0
3 years ago
Read 2 more answers
Describe all the main stress causal agents​
LekaFEV [45]

Answer:

Causes of Stress

Being unhappy in your job.

Having a heavy workload or too much responsibility.

Working long hours.

Having poor management, unclear expectations of your work, or no say in the decision-making process.

Working under dangerous conditions.

Being insecure about your chance for advancement or risk of termination.

5 0
3 years ago
The batteries on electric vehicles are recharged using electricity from either a wall socket or dedicated charging unit.
yuradex [85]

Answer:

true

Explanation:

7 0
3 years ago
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