ECE 241 Digital Systems

Pin-Out Information for TTL Chips and Digital Board

 

1.     Here are the Pin-out numbers and schematics for all of the TTL chips used in Lab 1:

 

 

 

 

 

 

 

2.     Here is the pin out connections for the header on the digital switch board:

 

Digital Board Header Pin Assignment

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pin#

Description

 

 

 

 

 

Description

Pin#

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

Switch #1

 

o

 

o

 

Switch #2

2

 

 

3

Switch #3

 

o

 

o

 

Switch #4

4

 

 

5

Switch #5

 

o

 

o

 

Switch #6

6

 

 

7

Switch #7

 

o

 

o

 

Switch #8

8

 

 

9

Ground

 

o

 

o

 

NC

10

 

 

11

Ground

 

o

 

o

 

NC

12

 

 

13

Ground

 

o

 

o

 

NC

14

 

 

15

Ground

 

o

 

o

 

NC

16

 

 

17

LED #1

 

o

 

o

 

LED #2

18

 

 

19

LED #3

 

o

 

o

 

LED #4

20

 

 

21

LED #5

 

o

 

o

 

LED #6

22

 

 

23

LED #7

 

o

 

o

 

LED #8

24

 

 

25

Ground

 

o

 

o

 

NC

26

 

 

27

Ground

 

o

 

o

 

NC

28

 

 

29

Ground

 

o

 

o

 

NC

30

 

 

31

Ground

 

o

 

o

 

NC

32

 

 

33

Clock

 

o

 

o

 

NC

34

 

 

35

NC

 

o

 

o

 

NC

36

 

 

37

NC

 

o

 

o

 

Pulse Button

38

 

 

39

NC

 

o

 

o

 

NC

40