[dsenette]

correct....and a CD drive DOESN'T ENTER data...it transfers data....there is a difference


by your logic you should have also listed the front side bus or your PCIE slot or the IDE and SATA controllers as input devices

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I do not know what those are or what those do.

So, Storage Access Device anyone?

[MynameisSteve]

I do not know what those are or what those do.

So, Storage Access Device anyone?

[Digerati]

by your logic you should have also listed the front side bus or your PCIE slot or the IDE and SATA controllers as input devices

As well as the hard drive - without the platters (the actual disks or media) within, it would just be an empty storage access device - a drive.

A disk drive is a storage device. It is NOT an input/output device. The actual CDs, DVDs, or disk platters are the "media" the drive uses. They too are not input/output devices. http://en.wikipedia....ki/Disk_storage

But, the cd-drive sends a signal to the system. Like I said... respond to what I said, about six sentences ago.

And again like we said several times now, that is incorrect. The drive does not send data, it allows the disk controller on the motherboard to retrieve the data. The data is not transmitted by the CD disk, or CD drive. The drive is a reader, the data is stored on the media; the disk. The drive, when instructed, reads the disk, the OS signals the controller to transfer the data into system RAM. No inputting. No outputting.

[dsenette]

And again like we said several times now, that is incorrect. The drive does not send data, it allows the disk controller on the motherboard to retrieve the data. The data is not transmitted by the CD disk, or CD drive. The drive is a reader, the data is stored on the media; the disk. The drive, when instructed, reads the disk, the OS signals the controller to transfer the data into system RAM. No inputting. No outputting.

i think that's the perfect illustration of this concept...


input is when something is ENTERED...i.e. the device that's accepting the data is transmitting/transferring the data to the system via a "push" structure where the information transfer is initiated by the device..like a keyboard....the computer doesn't make a request from the keyboard to get the information from the keyboard to the computer....the user "pushes" data to the keyboard by typing on it

where as with a CD drive or a hard drive....the drive DOES NOT initiate the transfer....the data isn't pushed...it's pulled

when you READ a CD that's in a disk drive...neither the drive nor the CD initiates the transfer...the drive controller (where the drive connects to the computer) initiates a read action that PULLS data from the device into the computer memory...the only function that the CD drive serves is as a translation device that allows the computer to be able to interpret the information on the media