Next, under the control of the handler, the processor determines which of the characters it corresponds to this scan code. The program of the interrupt handler sends the processor to the keyboard port where the scan code finds.By defining the recording of the program, the processor proceeds to its execution.Each data list record contains the address of the program serving an interrupt that coincides with the recording number. region random access memorycontaining interrupt vector - data list. Having received a fixed interrupt number, the processor appeals to the special.The keyboard port tells the interrupt with a fixed number.Scan code enters the port integrated into the motherboard.After pressing the key, the keyboard microcircuit generates scan code.Therefore, the computer reacts to commands of the main keyboard keys immediately after switching on. The driver you need already exist in the BIOS ROM. The main functions of the keyboard do not need special software.
This article discusses the keyboard device, layout, key assignment, characters and signs. of China Hungary India Indonesia Ireland Israel Italy Jamaica Japan Kuwait Latvia Lithuania Luxembourg Macao S.A.R.The main device for manual input information, commands and data.
of China Hungary India Indonesia Ireland Israel Italy Jamaica Japan Kuwait Latvia Lithuania Luxembourg Macao S.A.R.
0 kommentar(er)
