while(1) { P2 = led[sec%10]; P0 = led[sec/10]; if(key_s2 == 0) TR0 = 0; if(key_s3 == 0) TR0 = 1; if(key_s4 == 0) {TR0 = 0;sec = 0;msec = 0;}
时间: 2024-02-05 22:04:53 浏览: 41
}This code is an infinite loop that continuously displays the seconds and tenths of seconds on two seven-segment displays connected to P0 and P2 ports of a microcontroller. The value of seconds is stored in the variable "sec" and is updated using a timer (not shown in this code).
The code also checks for three push-button switches connected to the microcontroller. If the "key_s2" button is pressed, the timer is stopped (TR0 = 0). If the "key_s3" button is pressed, the timer is started (TR0 = 1). If the "key_s4" button is pressed, the timer is stopped, and the seconds and tenths of seconds are reset to zero.
Overall, this code provides a basic timer functionality with start, stop, and reset buttons.
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