4. Logic Gates and Related Devices - Part A
Logic gates serve as the foundational building blocks of digital systems, enabling the implementation of Boolean expressions. This chapter discusses fundamental logic gates including OR, AND, and NOT gates, derived gates like NAND, NOR, EXCLUSIVE-OR, and EXCLUSIVE-NOR, as well as their functions illustrated with truth tables. It concludes with an overview of applications in practical circuit design and device selection.
Sections
Navigate through the learning materials and practice exercises.
What we have learnt
- Logic gates are essential components in digital electronics for implementing logic functions.
- Truth tables provide a systematic way to represent the relationship between inputs and outputs of logic systems.
- Positive and negative logic systems define how binary states are represented through voltage levels.
Key Concepts
- -- Logic Gate
- A basic electronic circuit that performs logical operations on one or more inputs to produce a single output.
- -- Truth Table
- A representation of input-output relationships of a logic circuit showing all possible combinations of inputs and the corresponding outputs.
- -- Boolean Expression
- An algebraic expression that uses Boolean variables and logical operators to represent logical relationships.
- -- NAND Gate
- A logic gate that produces a low output only when all its inputs are high; it is the inverse of the AND gate.
- -- EXCLUSIVEOR Gate
- A logic gate that outputs high when the inputs are unequal and low when they are the same.
Additional Learning Materials
Supplementary resources to enhance your learning experience.