- Digital Electronics Definition: Digital electronics is defined as the field of engineering that studies and applies digital or discrete signals as opposed to analog signals.
- Core Concepts: Basics such as number systems and logic circuits are essential for understanding more complex digital electronic systems.
- Logic Gates: These are the building blocks of digital circuits, each type (AND, OR, NOT, etc.) having specific functions demonstrated through truth tables and diagrams.
- Binary Arithmetic: Understanding operations like addition, subtraction, multiplication, and division in binary is crucial for digital system designs.
- Practical Applications: Digital electronics underpin various applications from consumer electronics to sophisticated military systems, highlighting their broad relevance.
What is Digital Electronics?
Digital electronics is the study and use of discrete, usually binary, signals. Analog electronics instead uses continuous signals. Together those two fields are called Analog and Digital Electronics. Digital circuits appear in industry, communications and military equipment because they store state, reject a useful amount of noise and scale in ICs. A practical advantage of digital electronics is that a function can be packed into a smaller, cheaper chip as processes shrink, not a single “revolutionary” cause.
The related pages on this site start from number systems and logic circuits, then move to harder concepts of Digital Electronics such as TTL, PMOS-NMOS logic, Flip Flops and the other building blocks listed below.
Those pages use diagrams, tables and worked examples. Read the basics first, then the later articles on families and sequential logic.
The number-system pages cover binary, other radices and how those representations convert into each other.
They then cover Binary Arithmetic and Boolean algebra, including binary addition, binary subtraction, binary multiplication and binary division, plus the Boolean laws used to simplify gates.
Coding pages include ASCII code, Gray Code and Hamming code. Gate pages cover the common logic gates: AND gate, OR gate, NOT gate, NAND gate, NOR gate and EX-OR gate, each with a diagram and a truth tables.
Those topics are the usual starting set. Later pages take TTL, other Logic Families, MOS gates and flip-flops (JK, D, T).
This Electrical Engineering site includes digital electronics because power, control and comms work now share the same binary hardware. Practice items are in the basic electronics questions.
