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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.
A speeder is pulling directly away and increasing his distance from a police car that is moving at 25.1 m/s with respect to the ground. The radar gun in the police car emits an electromagnetic wave with a frequency of 7.16E+9 Hz.
A recording trace r(t) is definedas r(t) = s(t) + n(t), where s(t) =10sin(20?t) (i.e., a 10 Hz sine wave, given f= 2f) is the signal and n(t) = sin(120t) (i.e., the 60 Hz electromagnetic noise) the noise.
What makes engineering a true profession
A 480 V permanent magnet ac motor is consuming 10 kW at power factor 0.80 lagging. Its speed is 1800 rpm. The winding resistance is 0.5 ohms per phase. Core losses are 100 W.
A client has given you an equivalent AC circuit of a sheet of glass. They need to find out how to break the glass with high frequency sound energy. The equivalent circuit contains an AC voltage source which replicates the input energy from the sou..
Two identical conducting spheres A and B carry equal charge. They are separated by a distance much larger than their diameters.
K map explanation for mod 5 up synchronous counter?
Using Euler's relation , the signal x(t) defined above canbe expressed as a sun of complex exponential signals using the finite Fourier synthesis summation. Determine values for f, N and all the complex amplitudes, a.
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
Using MatLab, create and graph the pairwise convolution of the following functions (i.e., A must be convolved with B, C, D, and E, individually. B must be convolved with C, D, and E, individually, Etc.). All time scales are -4 to +4.
A three-bit Johnson counter is clocked with pulses at a 120 MHz rate. What will be the pulse frequency of the output of the last flip-flop in the chain. Ten pulses are applied to a four-bit asynchronous counter. If the counter state was 0000 befor..
Determine the phase angle difference between the voltage and current, and whether the voltage leads or lags the current, if (a) V = 240/243 V rms and I = 3/9 A rms; (b) the power factor of the load is 0.55 lagging; (c) the power factor of the load..
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