Answer:
The answer is below
Explanation:
There are cases where the use of a NULL value would be appropriate in a computer programming situation. These cases can be summarily described below:
The first case is in a situation where the value of the attribute of a certain element is known to exist, but the value can not be found
The second case is in a situation where the value of the attribute of a certain element is not known whether it exists or not.
Answer:
the answer is going to be printer
A way to make the metro system more sustainable is to use machine learning so as to optimize the frequency of train routes using passenger load.
<h3>What is a sustainable transport system?</h3>
This sustainable transport system is known to be a kind of system that aids the basic access and growth needs of the society to be met rightly and safely.
This also should be meant in a way that is consistent with human and ecosystem health, and boast equity in all successive generations.
Other methods are the use of Cooling System to lower temperature and non waste of Energy and also lower the Noise Levels.
learn more about Sustainability from
brainly.com/question/25032305
Answer:
- Operating System.
- Laptop.
- Convertible computer.
- Peripheral.
- Desktop Computer.
Explanation:
Operating system is a software that manages the hardware and the software in the system and provides the interface between machine and the user.
Laptops are the portable computing devices which you can carry with you.
Convertible computer have a keyboard that is detachable and can be converted into a tablet.
Peripherals are devices which we can attach to the computer.
Desktop computer is a computing device that not portable at all.
