Chapter 5: Designing Combination Systems

Signals and SystemsDigital Logic System

Prof. Wonhee Kim

Iterative Systems

2

Delay in Combinational Logic Circuits

3

Delay in Combinational Logic Circuits

4

Two 4-bit Comparators

5

Decoder

6

Decoder

7

Decoder

8

Decoder

9

Decoder

10

Encoder

11

Encoder

12

Multiplexer

13

Multiplexer

14

Multiplexer

15

De-multiplexer

16

3 State Gates

17

a a ffEN EN

3 State Gates

18

Gate Arrays

19

Gate Arrays

20

PLA (Programmable logic array)

FPGA(Field programmable gate array)

Gate Arrays

21

Gate Arrays – ROM (Read Only Memory)

22

Gate Arrays – PLA

23

Gate Arrays – PLA

24

Gate Arrays – PLA

25

Gate Arrays – PAL

26

Gate Arrays – PAL

27

Gate Arrays – PAL & Feedback

28

Gate Arrays – PAL & Feedback

29