What is the keyboard driver?
keyboard controller is a type of integrated circuit inside most computers that is designed to receive the input from the keyboard and transfer it to the central processing unit (CPU), where it can be handed over to the operating system for interpretation. In general, when the keyboard controller receives a signal from a keyboard or a similar input device, it generates a signal known as an interruption that causes the CPU to briefly stop the execution to handle the signal that sends the keyboard driver. Depending on the different hardware specifics, the keyboard controller receives different sequences of bits from the keyboard and then passes this information through the search table where the information is translated into bytes known as scanning codes that can be easily interpreted. The controller also processes the interpretation of some physical aspects related to the keyboard, such as the printing of timing keys when the key is held for a long time, and activation or deactivating light-editing diodes (LEDs)The lock of the number or capital cities on the keyboard itself.
Keyboard control can vary, but the integrated circuit is traditionally on the computer's motherboard. In cases where the keyboard is not an integral part of the computer, the controller is almost never inside the keyboard hardware. The opposite applies to keyboards that are part of a computer structure, such as a notebook. There are also situations in which there is no separate keyboard controller, but the function is emulated through other parts of the processor.
Hardware, which is inside a traditional computer keyboard, sends information to the controller about which keys have been pressed, usually by measuring current change under individual keys. This signal is standardized by a circuit -like keypad circuit in Computer. This means that each keyboard has knowledge of its own topography and location and arrangement of keys and can send the same signal when the user StisKNE Return key, no matter where the key is on the keyboard or what physical design has a keyboard.
The controller inside the main computer takes this signal and converts it to a scan code that is easier to interpreted CPU. The modifier keys, such as shift or control, are passed along with molded other keys. At this point, the keyboard controller sends a signal to a CPU that causes its current action to stop and load the scanning codes. The CPU then transmits the scanning codes to the system where the system event is generated in many operating systems to process an active program.