5 » For f llowing circuit A and B are two binary numbers. (B= 001 lb and A=1 1 1

Question

5 » For f llowing circuit A and B are two binary numbers. (B= 001 lb and A=1 1 106). How many CLK pulse can pass to the buffer when the start signal goes to be high for one period of CLK « a. b. If the initial state of the 4-bit buffer is A, specify the final value in the buffer, when the operation ended. c. If the initial state of the counter is 0110b, specify the final in the counter., when the operation ended. Load 4bit-FA Start bit Buffer clk Binary d. te the following table for above circuit If the initial state of the 4-bit buffer is A Outut of 4-bit Adder Output of 4-bit BufTer Ouput of couster

Explanation / Answer

# Clk

Full Adder

Ci

Buffer

B

XXXX

1

1010 (A)

0011

1

1110

1

1110

0011

2

0010

1

0010

0011

3

0110

1

0110

0011

4

1010

1

1010

0011

5

1110

1

1110

0011

6

0010

1

0010

0011

7

0110

1

0110

0011

8

1010

1

1010

0011

9

1110

1

1110

0011

# Clk

Counter (assume UP counter)

Initial

0110

1

0111

2

1000

3

1001

4

1010

5

1011

6

1100

7

1101

8

1110

9

1111

Output of 4-bit adder

Co b3 b2 b1 b0

Output of 4-bit buffer

b3 b2 b1 b0

Output of Counter

b3 b2 b1 b0

Initial Value

11011

1110

0000

After 1 CLK

10010

0010

0001

After 2 CLK

00110

0110

0010

After 3 CLK

01010

1010

0011

After 4 CLK

01110

1110

0100

After 5 CLK

10010

0010

0101

After 6 CLK

00110

0110

0110

After 7 CLK

01010

1010

0111

After 8 CLK

01110

1110

1000

After 9 CLK

10010

0010

1001

# Clk

Full Adder

Ci

Buffer

B

XXXX

1

1010 (A)

0011

1

1110

1

1110

0011

2

0010

1

0010

0011

3

0110

1

0110

0011

4

1010

1

1010

0011

5

1110

1

1110

0011

6

0010

1

0010

0011

7

0110

1

0110

0011

8

1010

1

1010

0011

9

1110

1

1110

0011

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