We assume that your microcontroller is clocked at 10 MHz and has a 16-bit free-running counter. The sprinkler controller system controls two different zones by turning the sprinklers within each zone on and off. To turn on the sprinklers in a zone, the controller needs to receive a 152.589 Hz PWM signal from its microcontroller. To turn off the sprinklers in the same zone, the controller needs to receive the PWM signal with a different duty cycle. B.- After 15 min, your microcontroller must send the PWM signal with a 15% duty cycle of 10 ms to turn off the sprinklers in zone one.

Using interrupts, design and plot an 8051 heater controller that keeps a building at 25°C + The following interface is assumed for this example. The heater ON/OFF switch is connected to P1.2 such that P1.2= 1 for heater ON P1.2 = 0 for heater OFF Temperature sensors are connected to INTO and INT1 and provide HOT and COLD signals, respectively, such that HOT = 0 if T> 26°C %3D %3D COLD = 0 if T< 24C %3D

8.2 A logic circuit with active-low synchronous reset has two control inputs x and y. If x is 1 and y is 0, register R is incremented by 1 and control goes to a second state. If x is 0 and y is 1, register R is cleared to zero and control goes from the initial state to a third state. Otherwise, control stays in the initial state. Draw (1) a block diagram showing the controller, datapath unit (with internal registers), and signals, and (2) the portion of an ASMD chart starting from an initial Гу. state.

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5.- Design a microcontroller system to control a sprinkler controller that performs the following tasks. We assume that your microcontroller is clocked at 10 MHz and has a 16-bit free-running counter. The sprinkler controller system controls two different zones by turning the sprinklers within each zone on and off. To turn on the sprinklers in a zone, the controller needs to receive a 152.589 Hz PWM signal from its microcontroller. To turn off the sprinklers in the same zone, the controller needs to receive the PWM signal with a different duty cycle. B.- After 15 min, your microcontroller must send the PWM signal with a 15% duty cycle of 10 ms to turn off the sprinklers in zone one.

picks one input and connects it to one output. seven-segment display Demultiplexer, ob. Od. parity multiplexer generator.

design a synchronous counter with sequence One, Four, Seven, one, ... Hint: the counter is idle if its input is low.

A coffee maker has a full automatic feature. The coffee maker is in standby mode and starts when a start button is pressed, which generates a signal C. It sequences through the following stages: "mixing with milk", “adding sugar", and “dispense". There is a “no sugar" option switch D, which, if turned on, causes the coffee maker to jump from “mixing with milk" stage to “dispense" stage. When the start button is pressed, a timer begins ticking, which generates an output signal ST. The timer generates an input signal TE at the end of the time period, and then resets itself and starts again. Assuming that all stages take the same duration of time, design the coffee maker by including all the following items: • the state diagram • the state transition table • Boolean expressions for the next states and the output • the logic circuit

The solid state devices designed to perform logical decision making to control the equipment is a. Switches O b. Programmable Logic Controller O. Relays The symbol used for output device in PLC is а. Ob. HE O d.

Must answer all the questions.Dont attempt only one.i will dislike otherwise. Please help answer the following question regarding the PID controller. a) Define the meaning of the term "offset" b) Explain how offset can be reduced by adjusting the proportional action of controller c) State why (b) is not the best way of effectively dealing with "offset" AND Explain how "offset" can be reduced to zero.