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design the logic to control the temperature in a green house. the temperature between 72 degrees and 80 degrees if the tem is below 72 degrees, a heater must be activated if the tem is above 80 degrees a cooler must be started. there are 2 sensors one output a high if tem is below 72 degrees and one outputs a high if the tem is above 80 degrees. these sensors are prone to failure so the design must be able to detect if both sensors are on at the same time. if that happens, the circuit must turn off the heater, turn off the cooler and set an alarm for maintenance represent the heater and alarm as a rectangle design the logic for security system. the system contains a door sensor a window sensor and a key activation switch. if the switch is on opening the window will set off alarm immediately. opening the door will start a 30 second timers. if the the key switch is not turned off within 30 sec thte alarm is set off. the door sensor and window sensor output a low when they are opend. the 30 sec timer requires a high to activate and output a high when the timer expire. the key switch output a high when it is activated and low when it is deactivated in ur circuit schematic represent the timer as a box labeled 30 s timer
design a third-order Butterworth highpass filter with fc=100 Hz and high frequency gain of 20 dB using the standard form of the third-order Butterworth polynomial (s+1)(s^2+s+1)
General questions for network communications, A user message is split into 15 frames, each of which has an 80% chance of arriving error-free. If no error control is used by the data link layer, how many times must the message be sent on the averag..
Flip-flops must be in what mode (Set, Reset, Hold, or Toggle) in order to divide a clock's frequency when building a counter What is the advantage of a synchronous counter as compared to a ripple counter
Draw a strain gauge circuit and its external components to attach to a conveyor mounted only at the ends to measure the load at the center of the conveyor. What type of testing would you need to do to establish a baseline and calibration curve for..
A runner should STEAL a base if and only if the manager pulls his EAR and BOWs while patting his HEAD, or if he lifts his LEG and pats his HEAD without BOWing, or anytime he pulls his EAR without lifting his LEG. Sketch a minimal circuit that coul..
In spherical Coordinates the potential of a dipole lacated at the origin is given by: a) use \(E = -grad \phi\) and the above to calculate E for a dipole located in free space.
An additional variable power factor load is to be added to the factory. The new load will add 320 kW to the factory. The power factor of the variable power factor load is to be adjusted so that the overall power factor of the factory is 0.96 laggi..
The electrostatic potential in space is given by the scalar field V(r)=V(x,y,z)=e^y + (3x)^2-4cos(z) Find the potential difference between the points P(1,1,1) and Q(0,0,0).
Assuming dopant atoms are uniformly distributed in a silicon crystal, how far apart are these atoms when the doping concentration is a) 10l5 cm-3, b) 1018 cm-3, c) 5times1020 cm-3. Estimate the resistivity of pure silicon in Ohm-cm
Immediately after the explosion, the velocity of the 1200 kg upper stage is 5700 m/s in the same direction as before. What is the velocity (magnitude and direction) of the 2400 kg lower stage after the explosion
The controlled variable in a closed-loop system is the direction of a robot arm. Initially, it is at 50o; then it is commanded to go to 25o. What is the error when the arm position is at 15o
What happens to the program counter (PC) when a subroutine is called. What register is used to keep track of the return point. What happens to the register that keeps track of the return point if a subroutine calls another subroutine
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