AT89S52 microcontroller-based human reaction speed tester s achieve the following functions: 1. Press the Start button, the lights, the button remains pressed. 2. lit continuously for a random time, then off, release the button when the light turns off people. 3. Calculate the difference between the time the lights go out and the button is released the time, displayed. 4. If the tester lights off before you release the button, the error message is displayed.

test\mytest.c
....\mytest.LST
....\STARTUP.A51
....\STARTUP.LST
....\STARTUP.OBJ
....\test.lnp
....\test.M51
....\test.plg
....\test.uvproj
....\改过的C语言.txt
test

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