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BCA-108N · Digital Electronics
Unit 4

Latches, Flip-Flops & Shift Registers

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Unit 4 Learning Hub

Latches, Flip-Flops & Shift Registers

Official MJPRU BCA Unit 4: Latches, Flip-Flops & Shift Registers for BCA-108N (Digital Electronics).

Syllabus Topics:Sequential Circuits: Comparison with Combinational Circuits, Role of Memory & Feedback LoopLatches vs Flip-Flops: Level Triggering vs Edge Triggering (Positive and Negative Edge)SR Latch: NAND and NOR Gate Realizations, Truth Tables & Forbidden/Indeterminate StateClocked SR Flip-Flop: Circuit, Truth Table, Characteristic Table & Excitation TableJK Flip-Flop: Overcoming Forbidden State, Working Principle, Characteristic and Excitation TablesRace Around Condition in JK Flip-Flop: Root Cause & Elimination (Edge Triggering & Master-Slave)Master-Slave JK Flip-Flop: Circuit Diagram, Operation, Timing Diagram & State DiagramsD (Data/Delay) Flip-Flop: Circuit, Operation, Application in Latching & Characteristic TableT (Toggle) Flip-Flop: Circuit, Truth Table, Frequency Division Application & Excitation TableRegisters: Definition, Buffer Register, Shift Registers Classification (SISO, SIPO, PISO, PIPO)Bidirectional Shift Registers & Universal Shift Register Concept
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Introduction to Computers & The IPO Cycle

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Topic 1 · The foundation of modern computing

Introduction to Computers & The IPO Cycle

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💡 The Big Picture:A computer is an electronic system that takes raw data as Input, processes it under programmed logic, and produces meaningful Information as Output.
🍪 Everyday Analogy:Think of baking cookies: Flour & Sugar (Input) ➔ The Oven (Processing) ➔ Warm Delicious Cookie (Output)! 🍪
Key Exam Takeaways
  • ·Data = Raw, unprocessed facts without context (e.g. 42, 'apple').
  • ·Information = Structured data with meaning (e.g. 'Temperature: 42°C').
  • ·Hardware is what you can touch; Software is the instructions running inside.
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Which of the following represents unprocessed raw facts?

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