Implement a 4-bit counter using the LEDs (You do not need the switches for this exercise). The count value should update approximately every 1 second. Use the BTN0 and BTN1 push buttons on the ZYBO Z7-10 board to control the direction of the count. For example, when the BTN0 button is pressed, the counter should count up. Likewise when the button BTN1 is pressed, the counter should count down. When neither button is pressed, the count should remain the same. Demonstrate this operation to the TA upon completion.

Tom is having a problem with his washing machine. he notices that the machine vibrates violently at a frequency of 1500 rpm due to an unknown rotating unbalance. the machine is mounted on 4 springs each having a stiffness of 10 kn/m. tom wishes to add an undamped vibration absorber attached by a spring under the machine the machine working frequency ranges between 800 rpm to 2000 rpm and its total mass while loaded is assumed to be 80 kg a) what should be the mass of the absorber added to the machine so that the natural frequency falls outside the working range? b) after a first trial of an absorber using a mass of 35 kg, the amplitude of the oscillation was found to be 10 cm. what is the value of the rotating unbalance? c) using me-3.5 kg.m, find the optimal absorber (by minimizing its mass). what would be the amplitude of the oscillation of the absorber?