I wish to discover affirmation that the keyboard on a PC kind laptop controls the NUM_LOCK LED regionally or if the Pc System software program sends instructions to the keyboard to handle this LED primarily based upon it seeing scan codes from the NUM_LOCK key.
I ask this as a result of I used to be just lately doing a little experimentation with a separate USB Numerical Keypad and located that when its NUM_LOCK button is pushed there isn’t a NUM_LOCK scan code despatched to the pc at the moment though its NUM_LOCK LED comes on. Utilizing a web-based browser primarily based keyboard check I see that this bizarre keypad, when within the NumLock mode will ship the next for every of the opposite key pad keys:: Numlock Down Scan Code – Quantity Button Down Scan Code – Quantity Button Up Scan Code – Numlock Up Scan Code.
In the identical keyboard check my common keyboard sends a NumLock Down after which NumLock Up scan codes because the NUM_LOCK button is pressed and launched.
Why would this USB Keypad work in another way that the common keyboard?