What happens when we press ⚡ power ⚡ button on a computer?


The computer performs the power-on-self-test also called #POST. This is done to make sure everything is working,
for example :- it check for a CPU, memory and HDD or Network ( to boot from )
::booting - means loading the Operating system to the memory (RAM)

- This is done by a program called a firmware (just a piece of software that comes with the motherboard).

- If something is missing the firmware will throw an error on our screen 💥

- If everything went fine it gives control to the operating system.

And the operating system starts by running its #kernel and the kernel also starts loading the applications and programs to memory

- A kernel is program (software) that manages and allocates the resources for applications(e.g: browsers, ms-office ...etc).

///That is why it is called the mother of all processes///

::process - is a running application (opened app)

::resources - are the hardware components of a computer that is needed to run an application i.e, CPU, RAM, GPU ....

#Computers

@python_pioneers
@python_pioneers

Comment : if you have any question 😊