Cycle of Keyboard?

["Bryan Parkoff" <nospam@nospam.com>]

Hello,

    In our old time when we had Apple II computer.  We know that 6502 CPU 
must be involved to manipulate video, floppy drive, tape cassette, sound, 
and more.
    Do you believe that keyboard's repeating rate is from 6502 CPU's cycle 
count rather than individual repeating rate inside keyboard?  I can't 
remember what Understanding Apple //e book says that keyboard's repeating 
rate is approximately 2 to 10Hz?  It can't be right because repeating letter 
appearing in the screen is too fast.
    Do you know someone who they write algorithm to manipulate repeating 
rate individually without depending on Windows Message Loop such as 
WM_KEYDOWN inside WinProc function?  Some programmers claim that it is 
impossible, but they stick with Windows Message Loop.  It has to find other 
way to track repeating rate accurately by counting 6502 CPU cycles.

Bryan Parkoff