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GUI Implementation steps : 1. Create a push button to open pop up for getting time and set its geometry 2. Create label to show time and complete status 3. Set label geometry, font size and align its text to center 4. Create three push button for starting the timer, pausing the timer and for resetting the timer 5. Set the geometry of each button Back-end Implementation steps : 1. Create count variable and flag to know if counter is stopped or running 2. Add action to each button 3. Inside the get second button action get the value of second using input dialog box and make the flag false 4. Inside the start action make flag true but if count is zero make if false 5. Inside pause action make flag false 6. Inside the reset action make flag false, set count value to zero and set text to the label 7. Make a timer object which calls its method after every 100 milliseconds 8. Inside the timer action check for the flag then decrement the value of count and set text to the label
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