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4th sem Question paper of Digital Electronics - Electrical Engineering (EE) PDF Download
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FAQs on 4th sem Question paper of Digital Electronics - Electrical Engineering (EE)
| 1. What is digital electronics in electrical engineering? |  |
Ans. Digital electronics is a branch of electrical engineering that deals with the study and design of digital circuits, which are composed of logic gates and digital components. These circuits manipulate discrete signals or binary digits (bits) to perform various operations such as arithmetic calculations, data storage, and communication.
| 2. What are logic gates and their functions in digital electronics? | |
Ans. Logic gates are fundamental building blocks of digital circuits. They are electronic devices that perform logical operations on one or more binary inputs to produce a single binary output. Some commonly used logic gates include AND, OR, NOT, NAND, NOR, and XOR gates. The functions of these gates include logical AND, logical OR, logical NOT, logical NAND, logical NOR, and logical XOR operations respectively.
| 3. How are truth tables used in digital electronics? | |
Ans. Truth tables are used in digital electronics to represent the logical behavior and relationship between input and output states of a digital circuit. A truth table lists all possible combinations of input states and their corresponding output states. By analyzing the truth table, one can determine the conditions under which the circuit produces certain outputs based on its inputs.
| 4. What is the concept of binary numbers in digital electronics? | |
Ans. Binary numbers are a number system that uses only two digits, 0 and 1, to represent numerical values. In digital electronics, binary numbers are used to represent and manipulate information. Each digit in a binary number is called a bit, and the position of each bit determines its value based on powers of 2. Binary numbers are widely used in digital circuits for data representation and storage.
| 5. What is the difference between combinational and sequential circuits in digital electronics? | |
Ans. Combinational circuits and sequential circuits are two types of digital circuits in digital electronics. Combinational circuits are circuits where the output depends solely on the current input state and does not depend on any previous input or output states. On the other hand, sequential circuits have outputs that depend not only on the current input but also on the previous input and output states. Sequential circuits incorporate memory elements to store past states, allowing them to exhibit memory and sequential behavior.
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