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Class notes Digital Electronics and basics to advance

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To master Digital Electronics (DE) from beginner to advanced, you follow a path that starts with basic logic gates and ends with designing complex chips. Level 1: The Basics (Steps 1–20) Understanding Analog vs. Digital signals. Binary Number System (0s and 1s). Decimal to Binary conversion. Binary to Hexadecimal conversion (crucial for VLSI). Octal and BCD codes. Logic Gates: The NOT gate. The AND gate (logical multiplication). The OR gate (logical addition). Universal Gates: Why NAND and NOR can build anything. The XOR gate (for parity and math). The XNOR gate (for equality checking). Boolean Algebra laws (Commutative, Associative). De Morgan’s Laws (breaking long bars). Drawing basic logic circuits from expressions. Truth tables for 2, 3, and 4 variables. Introduction to MinTerms and MaxTerms. Standard Sum of Products (SOP) form. Product of Sums (POS) form. Simplification using Karnaugh Maps (K-Maps). Handling "Don't Care" conditions in K-Maps. Level 2: Building Blocks (Steps 21–40) Half Adders (1-bit addition). Full Adders (handling the carry). Half and Full Subtractors. Multiplexers (MUX): The "Data Selector." Building 4x1 MUX using 2x1 MUX. Demultiplexers (De-MUX). Encoders (Priority Encoders). Decoders (3-to-8 line decoders). Seven-segment display decoding. Magnitude Comparators (Greater, Lesser, Equal). Introduction to Sequential Logic (time-dependent). The concept of Clock signals. SR Latch (The simplest memory). The SR Flip-Flop. The D Flip-Flop (Data storage). The JK Flip-Flop (Solving the "race around" problem). T Flip-Flop (Toggling). Master-Slave JK Flip-Flop. Excitation tables for Flip-Flops. Converting one Flip-Flop to another. Level 3: Memory & Counting (Steps 41–60) Registers: How data is moved. Serial-In Serial-Out (SISO) registers. Parallel-In Parallel-Out (PIPO) registers. Counters: How digital clocks work. Asynchronous (Ripple) Counters. Synchronous Counters (Faster and more reliable). Modulo-N Counters (counting to a specific number). Up/Down Counters. Ring Counters. Johnson Counters. Design of State Machines (FSMs). Mealy Machine vs. Moore Machine.

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Uploaded on
March 8, 2026
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