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Stop Watch System

Implementation

  1. Used ATmega32 Microcontroller with frequency 8Mhz.
  2. Configure Timer1 in ATmega32 with CTC mode to count the Stop Watch time.
  3. Used six Common Anode 7-segments.
  4. Connect the six 7-segments in the project using the multiplexed technique.
  5. Connect 7447 decoder 4-pins to the first 4-pins in PORTC.
  6. Used first 6-pins in PORTA as the enable/disable pins for the six 7-segments.
  7. Stop Watch counting should start once the power is connected to the MCU.
  8. Configure External Interrupt INT0 with falling edge. Connect a push button with the internal pull-up resistor. If a falling edge detected the Stop Watch time should be reset.
  9. Configure External Interrupt INT1 with rising edge. Connect a push button with the external pull-down resistor. If a raising edge detected the Stop Watch time should be paused.
  10. Configure External Interrupt INT2 with falling edge. Connect a push button with the internal pull-up resistor. If a falling edge detected the Stop Watch time should be resumed.

Project Simulation

Simulation at Proteus

Project Design

Project Design

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