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A ubiquitous example of serial data communication is the cable linking a keyboard to a personal computer: for every key switch pressed, an ASCII character is transmitted to the computer. An interesting characteristic of this particular communication protocol is the random rate at which the ASCII characters are sent. Because the characters are generated at the rate the computer user happens to type, the rate is completely unpredictable. Consequently, this form of serial data communication is known as asynchronous. Compare and contrast this against synchronous serial data communication, giving an example of a synchronous data communications standard.
A series circuit consists of a 240V source and 20ohm, 30ohm, and 10ohm resistors. a) Find the current out of the positive terminal of the voltage source. b) Find the voltage across each resistor.
To digitally manipulate information we must encode it using binary numbers. Consider an encoding for playing cards. There are 52 cards in a deck and they are divided
A 300-km bundled 500-kV, 60-Hz, three-phase completely transposed overhead line has three ACSR 1351-kcmil conductors per bundle, with the bundle spacing 0.5 m. The horizontal phase spacings between bundle centers are 10, 10, and 20 m.
A random variable X has a variance of 9 and a statistically independent random variable Y has a variance of 25. Their sum is another random variable Z=X+Y. Without assuming that either random variable has a zero mean
A "Mealy" synchronous sequential circuit has one input X and one output Z. An output Z = 1 occurs every time the total number of 1's received is "divisible by 3" AND the total number of 0's received is an even number greater than zero.
The following represent solutions of the transmission line differential equations for some arbitrary function f(u): V(z,t) = 60 cos(1000t -5z) - 120 pi f (2t + z/100+12) V I(z,t) = 2 pi f (2t +z/100 +12) - cos (1000 t -5z) A a) what is the forward pr..
A new type of Schottky diode is optimized for low-voltage applications. It has typical forward voltage drop of 0.2 V, but its leakage current can be as high as 80 mA. It is being considered for a 12 V to 2.5 V converter with 50 W load.
When disconnected and fully charged, the voltage across the battery terminals is measured to be 13.8 V. When connected to a load that dissipates 18 W of power, the terminal voltage of the battery decreases to 12 V.
Simplify the Boolean function f(a,b,c,d)= sigma m(1,3,4,5,12,13) into a hazard free logic function and implement that function with two level NOR logic gates.
Using D-type flip-flops, design a synchronous Moore finite-state machine that monitors two inputs A and B, and asserts a scalar output if the number of 1s observed on the inputs is a multiple of 4.
A. find the sixtieth percentile B. Find the seventy fifth percentile C. Determine the number of data points that fall between the sixieth and seventy fifth percentiles you found in parts A. and B.
assume QPSK is the modulation method used in a digital communication system.The communication system requires minimum bit error.what is the acceptable bit error assuming additive white gaussian noise.
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