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Assume a 4-by-2 encoder with 4 active-HIGH inputs (D3, D2, D1 and DO) and 2 active-HIGH outputs (X1 and XO) has basic operation as follows: Input: D3= 1 ==> Output: X1 =1, X0=1 Input: D2= 1 ==> Output: X1 =1, X0=0 Input: D1= 1 ==> Output: X1 = 0, X0=1 Input: D0= 1 ==> Output: X1 =0, x0=0 The priority encoder has priority ranking as the following: DO (highest), D1, D2, D3 (lowest). Complete Table below that shows the summarized operation of the priority encoder 4-by-2 Priority Encoder Input Fe D3 D2 D1 DO x1 XO 1 11 1 10 1 01 + ÷ 100 8

Assume a 4-by-2 encoder with 4 active-HIGH inputs (D3, D2, D1 and DO) and 2 active-HIGH outputs (X1 and XO) has basic operation as follows: Input: D3= 1 ==> Output: X1 =1, X0=1 Input: D2= 1 ==> Output: X1 =1, X0=0 Input: D1= 1 ==> Output: X1 = 0, X0=1 Input: D0= 1 ==> Output: X1 =0, x0=0 The priority encoder has priority ranking as the following: DO (highest), D1, D2, D3 (lowest). Complete Table below that shows the summarized operation of the priority encoder 4-by-2 Priority Encoder Input Fe D3 D2 D1 DO x1 XO 1 11 1 10 1 01 + ÷ 100 8

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Assume a 4-by-2 encoder with 4 active-HIGH inputs (D3, D2, D1 and DO) and 2 active-HIGH outputs (X1 and XO) has basic operation as follows: Input: D3= 1 ==> Output: X1 =1, X0=1 Input: D2= 1 ==> Output: X1 =1, X0=0 Input: D1= 1 ==> Output: X1 =0, X0=1 Input: D0= 1 ==> Output: X1 = 0, X0=0 The priority encoder has priority ranking as the following: DO (highest), D1, D2, D3 (lowest). Complete Table below that shows the summarized operation of the priority encoder 4-by-2 Priority Encoder Input D3 D2 DI 1 + 1 + + + + + 1 ◆ DO x1 ΧΟ + 11 10 01 100
Transcribed Image Text:Assume a 4-by-2 encoder with 4 active-HIGH inputs (D3, D2, D1 and DO) and 2 active-HIGH outputs (X1 and XO) has basic operation as follows: Input: D3= 1 ==> Output: X1 =1, X0=1 Input: D2= 1 ==> Output: X1 =1, X0=0 Input: D1= 1 ==> Output: X1 =0, X0=1 Input: D0= 1 ==> Output: X1 = 0, X0=0 The priority encoder has priority ranking as the following: DO (highest), D1, D2, D3 (lowest). Complete Table below that shows the summarized operation of the priority encoder 4-by-2 Priority Encoder Input D3 D2 DI 1 + 1 + + + + + 1 ◆ DO x1 ΧΟ + 11 10 01 100
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