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A light sensor and a timer have active low outputs. The light sensor, which is active when it is dark, monitors the outdoor light and the timer can be programmed to any time. Design the logic to turn on an indoor light if it is dark outside and the timer has set the enable. A high turns on the light.
If the self-imaging planes are 1 cm apart, what is the transverse periodicity of the object. Assume the wavelength of illumination as 1 micron. find the locations of the planes where one can observe contrast reversal.
When RESET is negated, it should mov e to next-numbered state only if ENABLE is asserted. However, once it reaches state S7, it should stay there unless RESET is again asserted. The DONE output should be 1 if only the machine is in state S7 and EN..
An analog signal xa(t), band-limited to 5 Hz, is sampled at a rate of 10 samples per second to give a discrete-time signal x(n) = xa(0.1n). The discrete-time signal x(n) is then filtered with an digital FIR filter, h.
Sometimes, the series combination ofthese two devices is used to provide constant current to the LEDfrom a variable voltage. Sketch the overall volt amperecharacteristic to scale for the parallel combination of these two.
Determine whether the discrete signals below are periodic. If the signal is periodic, determine the number of samples per period. (a) x[n]=cos(πn) (b) x[n]= -3sin(.01πn) (c) x[n]= 1+cos((πn)/2)
A photoresistor is connected series to a battery of 10 V with internal resistance of 5 Ohms. The ohmic resistance of the photoresistor changes by time through the day and expressed as: RLDR=20-(10/t) .
Describe the steps in the keypad polling routine. Draw a flow chart for the keypad LCD software code. Discuss challenges experienced in developing the keypad LCD software code.
What is the resistivity of the wire? conductivity? Using the original dimensions of the wire, how much current can you pass through the wire until a 5V signal is degraded 5% or more?
Given the DSP system, where the sampling rate of 4000 Hz is used, the anti-aliasing filter is the Butterworth filter with a cut-off frequency of 200 Hz, and the percentage of aliasing level at the cut- off frequency is required to be less than 10%
Make sure to mark significant points in your figure (amplitude, offset, time, etc.). How could a device be modified to work as an electro-optic phase modulator? If we apply signal V, what is the range of phase shifts induced by this modulator.
An engineer makes an accurate flux plot for a pair of linecharges. one line charge has a fixed ?=1.00[C/m] and islocated on the x axis at x=-h. The other line charge has f=-0.75[C/m] and is located on the x axis at x=h.
A 1 lb weight is suspended from a 0.005 in diameter wire. The unstrained resistance of the wire, R0, is 270 ohm, and its unstrained length is L0=36 in. The wire's gauge factor is 3.2. a. Calculate the psi tensile stress on the loaded wire.
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