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close this bookDigital Teaching Aid (DED Philippinen, 86 p.)
close this folderCoding - Lesson 6
close this folderLesson Plan
View the document(introduction...)
View the documentIntroduction
View the documentASCII code
View the documentExcess-3 code
View the documentGray code
View the documentEncoder
View the documentDecoder
View the documentCode converter

Code converter

Code converter are logical networks which convert codes into another.


Fig. 6-7: TTL device, BCD ® excess-3 converter

Fig. 6-8: Convertion table, dec ® BCD® excess-3

Dec

BCD

Excess - 3


a

b

e

d

a1

b1

c1

d1

0

0

0

0

0

0

0

1

1

1

0

0

0

1

0

1

0

0

2

0

0

1

0

0

1

0

1

3

0

0

1

1

0

1

1

0

4

0

1

0

0

0

1

1

1

5

0

1

0

1

1

0

0

0

6

0

1

1

0

1

0

0

1

7

0

1

1

1

1

0

1

0

8

1

0

0

0

1

0

1

1

9

1

0

0

1

1

1

0

0