i read a lot of blogs and posts about this subject of bios and i still confused ,now i'm reading the book of a+ 901 902 (mike meyers)
so i find a lot of new information that i never learned.
so i will write my conclusion about this subject and i want to correct me if i'm wrong
so get the ball rolling:
the pc with cpu and other internel hardware is useless without a core programing that allow and enables the many different internel and external devices in a computer to function to together.
so in fact every device in the pc need a support programing that enable this device to communicat with cpu to do a certain funcation and this support programming is called bios so (there is a bios for keyboard controller and bios for hard drive, ..)
and all these bios together are called system bios that stored into Rom chip
so rom chip contains services(bios) that enable basic hardware to communicate with cpu
so my conclusion is that
bios is the name of services is not the name of all content of rom chip.. what i want to say is
rom chip contains the : --bios(services that enable the basic hardware to communicat with cpu )
-- in addition there is POST program that start when the cpu can communicat with basic hardware like keyboard controller that means when system bios is there after that pc starts the next program that's called POST to check the basic hardware like monitor or keyboard(in the POST not check the keyboard controller but keyboard itself)
--after POST process you can enter to another program called cmos utility or bios setup to change some data
--finally the boot process start
2- other thing, what i want to know is that if the bios /services that enables the basic hardware to communicate with cpu retrive or move to RAM when operating system is there(loaded)?
finally i know i go deeply in this subject because i really want to build a strong base (to understand very well), because i know the fundemantls are very important if you want to continue in this field.
thank a lot
so i find a lot of new information that i never learned.
so i will write my conclusion about this subject and i want to correct me if i'm wrong
so get the ball rolling:
the pc with cpu and other internel hardware is useless without a core programing that allow and enables the many different internel and external devices in a computer to function to together.
so in fact every device in the pc need a support programing that enable this device to communicat with cpu to do a certain funcation and this support programming is called bios so (there is a bios for keyboard controller and bios for hard drive, ..)
and all these bios together are called system bios that stored into Rom chip
so rom chip contains services(bios) that enable basic hardware to communicate with cpu
so my conclusion is that
bios is the name of services is not the name of all content of rom chip.. what i want to say is
rom chip contains the : --bios(services that enable the basic hardware to communicat with cpu )
-- in addition there is POST program that start when the cpu can communicat with basic hardware like keyboard controller that means when system bios is there after that pc starts the next program that's called POST to check the basic hardware like monitor or keyboard(in the POST not check the keyboard controller but keyboard itself)
--after POST process you can enter to another program called cmos utility or bios setup to change some data
--finally the boot process start
2- other thing, what i want to know is that if the bios /services that enables the basic hardware to communicate with cpu retrive or move to RAM when operating system is there(loaded)?
finally i know i go deeply in this subject because i really want to build a strong base (to understand very well), because i know the fundemantls are very important if you want to continue in this field.
thank a lot
Facebook
Twitter
Instagram