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夜幕无情

A postgraduate research question for a non-computer major should be answered from the perspective of the operating system, so here it is

When using word processing software such as word, enter a character w on the keyboard, and this character will be displayed on the display. Try to describe the processing steps of the computer in this process.

Everyone comes to help, the more detailed the better

greatdead

Keyboard -> Interrupt -> Operating System Interpretation -> Output

krillasn

1.KeyPress--->OS Receive this message --->OS process this message (To Know this is KeyPress message)---->Send to the device control ---->Interupt (Get the CPU time)- --->find the Key Value form the Keyboard matrix ---->get the value---->device send the is info to OS ---->OS process it, and know that need to print it - -->interupt ---->Get the CPU time---->Send to Monitor device controlor ---->Send the signal to Monitor---->Monitor display the shape about the signal.

leonjf

Nice topic

撒哈拉蚂蚁

Under windows operating system, X86 PC platform;
  Press the keyboard---"Put into the keyboard buffer, interrupt to notify the OS----"OS protects the scene, accepts the request, assigns messages to notify the relevant process--"The process word gets w, displays the terminal, and informs the OS that the acceptance is completed---OS is closed Interrupt, restore everything, and wait for the next instruction.