X hits on this document

Powerpoint document

Chapter 2: Custom single-purpose processors - page 7 / 29

95 views

0 shares

0 downloads

0 comments

7 / 29

7

Embedded Systems Design: A Unified Hardware/Software Introduction, (c) 2000 Vahid/Givargis

Combinational logic design

A) Problem description

y is 1 if a is to 1, or b and c are 1.  z is 1 if b or c is to 1, but not both, or if all are 1.

D) Minimized output equations

00

0

1

01

11

10

0

1

0

1

0

1

1

1

a

bc

y

y = a + bc

00

0

1

01

11

10

0

0

1

0

1

1

1

1

z

z = ab + b’c + bc’

a

bc

C) Output equations

y = a'bc + ab'c' + ab'c + abc' + abc

z = a'b'c + a'bc' + ab'c + abc' + abc

B) Truth table

1

0

1

1

1

1

1

0

1

1

1

1

1

1

1

0

0

1

0

1

0

1

0

0

1

0

1

1

1

0

1

0

0

1

0

0

0

0

0

0

Inputs

a

b

c

Outputs

y

z

E) Logic Gates

a

b

c

y

z

Document info
Document views95
Page views95
Page last viewedSun Dec 11 01:16:54 UTC 2016
Pages29
Paragraphs1664
Words3162

Comments