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Combinational Functional Devices

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Presentation on theme: "Combinational Functional Devices"— Presentation transcript:

1 Combinational Functional Devices
Lecture No. 15 Combinational Functional Devices This is the fifteenth lecture in a series of 45 lectures on Digital Logic Design. svbitec.wordpress.com

2 Recap Half-Adder Full-Adder Parallel Binary Adder Carry Propagation
Look-Ahead Carry Generator MSI 4-bit Adder Cascading 4-bit Adders 5 minutes svbitec.wordpress.com

3 BCD Adder BCD Addition and error conditions
Single digit BCD Adder Circuit (fig 1) BCD error detection ckt. (tab 1,fig 2,3) Connection of error detection ckt. (fig4) 8 minutes Total 13 minutes svbitec.wordpress.com

4 Cascading BCD Adders 2 digit BCD Adder (fig5)
Adding BCD numbers (tab 2, 3) 4 minutes Total 17 minutes svbitec.wordpress.com

5 Subtraction 2’s Complement Subtraction
2’s complement Subtraction example Subtracter Circuit (fig 6) 4-bit Adder/Subtracter Unit (fig 7) Cascading Subtracters (fig 8) Addition/Subtraction examples (tab 4 5) 12 minute Total 29 minutes svbitec.wordpress.com

6 ALU MSI 4-bit ALUs Function of 74X381 ALU (tab 6) Cascading 16-bit ALU
74X functions 74X functions group carry 74X functions Function of 74X381 ALU (tab 6) Cascading 16-bit ALU Group-Carry Look-Ahead (fig 9, 10) 8 minutes Total 37 minutes svbitec.wordpress.com

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