# Lecture No. 14 - PowerPoint PPT Presentation

1 / 33

Lecture No. 14. Combinational Functional Devices. Digital Logic &Design Vishal Jethva Lecture 14 svbitec.wordpress.com. Recap. Odd-Prime Number Detector Circuit Using Quine-McCluskey Method Combinational Logic Implemented in SOP and POS form Design and Implementation Steps

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

Lecture No. 14

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

### Lecture No. 14

Combinational Functional Devices

svbitec.wordpress.com

Digital Logic &Design

Vishal Jethva

Lecture 14

svbitec.wordpress.com

svbitec.wordpress.com

### Recap

• 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

svbitec.wordpress.com

### Odd-Parity Function

svbitec.wordpress.com

### SOP Expression SImplification

svbitec.wordpress.com

### Simplifying Expression

svbitec.wordpress.com

### Odd-Parity Generator Circuit

svbitec.wordpress.com

### Operation of Odd-Parity circuit

svbitec.wordpress.com

### XOR & XNOR Gates

• XOR function

• XNOR function

svbitec.wordpress.com

### XOR Gate

svbitec.wordpress.com

### XNOR Gate

svbitec.wordpress.com

### Combinational Functional Devices

• Comparators

• BCD to 7-Segment

• Parity Generator Circuit

svbitec.wordpress.com

svbitec.wordpress.com

svbitec.wordpress.com

• Function Table

• Expression

• Logic Circuit

svbitec.wordpress.com

svbitec.wordpress.com

svbitec.wordpress.com

• Function Table

• Expression

• Logic Circuit

svbitec.wordpress.com

svbitec.wordpress.com

### Sum Expression

svbitec.wordpress.com

### Carry Out Expression

svbitec.wordpress.com

svbitec.wordpress.com

svbitec.wordpress.com

svbitec.wordpress.com

• Multiple Single bit Full-Adder connected in Parallel

svbitec.wordpress.com

svbitec.wordpress.com

### Carry Propagation

• Carry Ripple

svbitec.wordpress.com

svbitec.wordpress.com

### Sum & Carry Expressions

svbitec.wordpress.com

### Carry Expressions

svbitec.wordpress.com

svbitec.wordpress.com

• 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

svbitec.wordpress.com