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Electronics and Communication Communication Systems Difficulty: Medium

A Boolean function f of two variables x and y is defined as follows: f(0, 0) = f(0, 1) = f(1, 1) = 1; f(1, 0) = 0 Assuming complements of x and y are not available, a minimum cost solution for realizing f using only 2-input NOR gates and 2-input OR gates (each having unit cost) would have a total cost of What is the ROC for the given signal? $${x_1}\left[ n \right] = {\left( {\frac{1}{2}} \right)^n}u\left[ {n - 3} \right]$$ Which among the following error detecting technique is supposed to be parity bit associated with character code? Which is the interrupt vector in 80286 which functions for stack fault? In a digital communication system, transmissions of successive bits through a noisy channel are assumed to be independent events with error probability p. The probability of at most one error in the transmission of an 8-bit sequence is