readme.txt

这是单片机C51典型应用设计代码

8051 Timer 1 Mode 2 Example Program
This example program shows how to configure timer/counter 1 as an 8-bit timer. An interrupt service routine (ISR) is invoked each time the timer overflows (goes from 0xFF to 0x00). Inside the ISR, the overflow_count variable increments.

To test this program...

Start the debugger. 
Set a breakpoint on the overflow_count++ line in the ISR. 
Run the program. 
Each time the interrupt routine is invoked, the debugger stops the program. Position the cursor over the overflow_count variable to view its current value.