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  STACKS in Data Structure A stack is  an abstract data type that holds an ordered, linear sequence of items . In contrast to a queue, a stack is a last in, first out (LIFO) structure. A real-life example is a stack of plates: you can only take a plate from the top of the stack, and you can only add a plate to the top of the stack... Click here to Know more

  Data Structure The main idea of asymptotic analysis is to have a measure of efficiency of algorithms that doesn’t depend on machine specific constants,  and doesn’t require algorithms to be implemented and time taken by programs to be compared. Asymptotic notations are mathematical tools to represent time complexity of algorithms for asymptotic analysis.  The following 3 asymptotic notations are mostly used to represent time complexity of algorithms. 1) Θ Notation, 2) Big O Notation, 3) Ω Notation. Click here to learn more

Q1. What is OOAD? Explain concepts of objects and class with the help of examples and diagrams. Ans. Object-oriented analysis and design (OOAD) is a popular technical approach for analyzing and designing an application, system, or business by applying objectoriented programming, as well as using visual modeling throughout the development life cycles to foster better stakeholder communication and product quality. OOAD in modern software engineering is typically conducted in an iterative and incremental way. The outputs of OOAD activities are analysis models (for OOA) and design models (for OOD) respectively. The intention is for these to be continuously refined and evolved, driven by key factors like risks and business values Object and Class The concepts of objects and classes are intrinsically linked with each other and form the foundation of object–oriented paradigm. For complete solution Click Here 👉 For any query contact me.

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Q1. (a) What is the need of modulating a signal? Will it be a right approach to send the    information as the signal itself?     Ans:   Modulation is the process of mixing a low energy message signal with the high energy carrier signal to produce a new high energy signal which carries information to a long distance. Modulation is the process of changing the characteristics (amplitude, frequency or phase) of the carrier signal, in accordance with the amplitude of the message signal. A device that performs modulation is called modulator.  Need for Modulation Modulation is extremely necessary in communication system because of the following reasons: 1) Avoids mixing of signals 2) Increase the range of communication 3) Wireless communication 4) Reduces the effect of noise 5) Reduces height of antenna Q1.  (b) Explain techniques used in digital to analog modulation with the help of diagram. Ans:  Coming Soon... For rest of question visit Visit:  Click here