# 2’s-Complement Add and Subtract Operations - PowerPoint PPT Presentation

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2’s-Complement Add and Subtract Operations. (. +. 4. ). (a). 0 0 1 0. (. +. 2. ). (b). 0 1 0 0. (. ). +. 0 0 1 1. +. 3. +. 1 0 1 0. (. -. 6. ). (. -. 2. ). 0 1 0 1. (. +. 5. ). 1 1 1 0. (. ). +. 7. (c). 1 0 1 1. (. -. 5. ). (d). 0 1 1 1. +. 1 1 1 0.

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### 2’s-Complement Add and Subtract Operations

(

+

4

)

(a)

0 0 1 0

(

+

2

)

(b)

0 1 0 0

(

)

+

0 0 1 1

+

3

+

1 0 1 0

(

-

6

)

(

-

2

)

0 1 0 1

(

+

5

)

1 1 1 0

(

)

+

7

(c)

1 0 1 1

(

-

5

)

(d)

0 1 1 1

+

1 1 1 0

(

-

2

)

+

1 1 0 1

(

-

3

)

1 0 0 1

(

-

7

)

0 1 0 0

(

+

4

)

(e)

1 1 0 1

1 1 0 1

(

-

3

)

+

1 0 0 1

0 1 1 1

-

(

-

7

)

0 1 0 0

(

+

4

)

(f)

0 0 1 0

(

+

2

)

0 0 1 0

(

)

-

0 1 0 0

+

4

+

1 1 0 0

1 1 1 0

(

-

2

)

0 1 1 0

0 1 1 0

(g)

(

+

6

)

(

+

3

)

0 0 1 1

1 1 0 1

-

+

0 0 1 1

(

+

3

)

1 0 0 1

(h)

1 0 0 1

(

-

7

)

0 1 0 1

-

1 0 1 1

(

-

5

)

+

1 1 1 0

(

-

2

)

1 0 0 1

(i)

(

-

7

)

1 0 0 1

-

0 0 0 1

(

+

1

)

+

1 1 1 1

1 0 0 0

(

-

8

)

(j)

0 0 1 0

0 0 1 0

(

+

2

)

1 1 0 1

0 0 1 1

-

+

(

-

3

)

(

)

0 1 0 1

+

5

Page 31

Figure 2.4.2's-complement Add and Subtract operations.