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Lecture No. 14

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Combinational Functional Devices

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Digital Logic &Design

Vishal Jethva

Lecture 14

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- Odd-Prime Number Detector Circuit
- Using Quine-McCluskey Method

- Combinational Logic
- Implemented in SOP and POS form
- Design and Implementation Steps
- Timing Diagram
- Active High/Low inputs/outputs

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- XOR function
- XNOR function

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- Comparators
- BCD to 7-Segment
- Parity Generator Circuit

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- Half Adder
- Full Adder

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- Function Table
- Expression
- Logic Circuit

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- Function Table
- Expression
- Logic Circuit

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- Full-Adder = Half-Adder + Half-Adder

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- Multiple Single bit Full-Adder connected in Parallel

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- Carry Ripple
- Look-Ahead Carry Circuits

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- 74LS83A
- 74LS283
- 16-pin ICs
- 4-bit A input
- 4-bit B input
- 4-bit Sum output
- 1-bit Carry in
- 1-bit Carry Out

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