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Describe the two common methods of correcting errors that occur on data links ? A frame check sequence (FCS) contains either a 16-bit or 32-bit sequence of bits. What is it and how is it derived? When FEC (forward error correction) is implemented, what types of errors can be corrected? How can one use FEC to correct burst errors?
How wide must the pMOS transistor be to achieve minimum average delay? What is the delay? How much faster is the average delay?
GaAs LED emitting surface size is 180 um by 180 um. The doping levels are NA = 9 E+15 cm-3 and ND = 5 E+17 cm-3. The n-layer is 70 um thick, and the p-layer is 8 um thick.
(a) The ideal delay system. y[n] = x[n-nd] (b) The accumulator system. y[n] = sum (xk) , k from -inf to n (c) Forward difference system. y[n] = x[n + 1]- x[n] (d) Backward difference system. y[n] = x[n]- x[n - 1]
design an excess-2 code inverters( in excess-2 code 0 isrepresented by0010,1 is represented by 0011, 2 is represented by0100 etc) . the four inputs to the converter circuit (A,B,C,D)represent an excess-2 code decimal digit.
use matlab to compute the inverse laplace transform of xss22s1ss1s210s50 and determine the value of xt in the steady
Explain why learning reduces the effective marginal cost of production. If firms set prices in proportion to their marginal costs, as suggested by the Economics Primer, how can learning firms ever hope to make a profit?
Memory storage and bit density, A hard disk contains four Platters. Each side of the platter is coated with a magnetic oxide, allowing data to be stored on it. The platters are 3.5 inches in diameter.
In actual electronic work, capacitances range from 30 picofarads, to 60 microfarads, to 5 farads. Assuming that each of these capacitances is charged to five volts, find for each a) the stored charge in coulombs
Store the arrival times in memory locations starting from $1000.(Do this is in C. Store the results in an array and don't worry about the speci c location of the results.)
An engineer intends to study an input signal with frequency components of 5, 6, and 10 kHz. It is desired that all other frequencies be filtered out. Design an appropriate filter, using L= 210mH and the MINIMUM bandwidth. Find C and R.
Design a full-wave bridge rectifier to deliver 12DC with less than 0.1V ripples into a load drawing 100mA. Specify any components as well as the input AC voltage required. Assume 0.6V diode drops.
1. Describe the similarities and differences between the three different types of polyphase AC motors. 2. Describe five (5) benefits of using a 3-phase motor compared to a single-phase motor.
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