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1. Write the C statement needed to arm the Port J interrupt?
2. What does placing asm("cli") at the beginning of an ISR do?
3. Explain what the software interrupt (SWI) does.
4. ROM Vector table addresses $FFD2 belongs to which interrupt.
5. Can an interrupt be interrupted as it is being processed? If so, is there a way to stop that from happening? If not, when does a second, pending interrupt start getting serviced?
6. What happens if interrupt request come in both IRQ~ and XIRQ~ at the same time? Assume both are enabled and have their own ISRs.
Given one has frequency response of a system (magnitude and phase), and a sine wave of a given frequency and phase is input, explain how to find the output.
Suppose the FCC allocates 300 kHz channels for a high quality video conference service. A service provider decides that this service requires 720 kbps (not including overhead and error control) for each channel.
A current source of 12 cos2000t A, a 200 ohm resistor, and a 0.2 H inductor are in parallel. Assume steady-state condition exist. At t=1ms, find the power being absorbed by the (a) resistor; (b) inductor; (c) sinusoidal source.
Given the electric field E = 1/z2 (8xyz ax + 4x2z ay - 4x2y az) V/m, find the differential amount of work done in moving a 6 nC charge a distance of 2 µm, starting at P(2, -2, 3) and proceeding in the direction
A spool of optical fiber with 8 µm core diameter
Finding the periodicity in N of the discrete time signal x(n) = Cos(3pi*Ts.n + pi/4) and then plotting the discrete signal. From this the condition on the sampling period is determined
A lossless transmission line with the electrical length of l = 0.3 lamda and the characteristics impedance of Z0 = 75 is terminated with a complex load ZL = 30 -j20 calculate the reflection coeficient at the load, the SWR on the line
A capacity coupled amplifier has a midband gain of 1000 V/V, a single high-frequency pole at 10 kHz, and a single low-frequency pole at 100 Hz. Negative feedback is employed so that the midband gain is reduced to 10.
(a) If the primary coil, Nsubp has 500 turns and Vsub2=240V than, how many turns does the secondary coil have (b) If the turns ratio is 5, and Vsub2=240V, than, what is the current flowing through both coils
For a particular amplifier connected in a feedback loop in which the output voltage is sampled, measurement of the output resistance before and after the loop is connected shows a change by a factor of 100.
A micrometer caliper is used to measure the diameter of a bolt and a reading of 0.768 inches is obtained. Based on this measurement, find the smallest possible diameter and the largest possible diameter.
A transformer has 100 turns on the primary (terminals 1-1') and 200 turns on the secondary (terminals 2-2'). A current in the primary causes a magnetic flux, which links all turns of both the primary and the secondary.
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