Comparator, Decoders - Digital Logic Design - Lecture Slides, Slides of Digital Logic Design and Programming

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Lecture No. 16

Combinational Functional Devices

Recap

 BCD Adder  Cascading BCD Adders  Subtraction  Cascading Adder/Subtraction units  ALU  Group Carry  Cascading ALU units

Comparator

 2-bit Parallel Comparator (fig 4)  Cascading of Comparators (tab 1 fig 5)  Iterative Comparator (fig 6)  MSI Comparator (fig 7)

Decoders

 Basic decoder (door lock) (fig 8)  Applications of Decoders  Selection of devices  Instruction decoding  2-to-4 Binary Decoder (tab 2 fig 9)  139 Dual 2-to-4 Decoders (tab3 fig 10)  138 3-to-8 Decoder (tab4)  Cascading of 138 Decoder (fig 11)

Encoders

 Binary Encoders (tab 5, fig 16)  Priority Encoders (tab 6)  Cascading priority Encoders (fig 17)  Decimal-to-BCD Encoder (fig 18)