Q1. Design three versions of the combinational circuit those input is a 4-bit 1IPage number and whose output is the 2' complement of the input number. for each of the following cases. (a) The circuit is a simplified two-level circuit. plus, inverters as needed for the input variables (b) The circuit is made up of four identical two input, two output cells. One for each bit. The cells are connected in cascade, with lines, similar to a carry between them. The value applied to the right most carry bit is 0, (c) The circuit is redesigned with carry look ahead-like logic in order to speed up the circuit in part (b) for use in larger circuits with 4n input bits.
Q1. Design three versions of the combinational circuit those input is a 4-bit 1IPage number and whose output is the 2' complement of the input number. for each of the following cases. (a) The circuit is a simplified two-level circuit. plus, inverters as needed for the input variables (b) The circuit is made up of four identical two input, two output cells. One for each bit. The cells are connected in cascade, with lines, similar to a carry between them. The value applied to the right most carry bit is 0, (c) The circuit is redesigned with carry look ahead-like logic in order to speed up the circuit in part (b) for use in larger circuits with 4n input bits.
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
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Transcribed Image Text:Q1. Design three versions of the combinational circuit those input is a 4-bit
1IPage
number and whose output is the 2' complement of the input number. for
each of the following cases.
(a) The circuit is a simplified two-level circuit. plus, inverters as needed for the
input variables
(b) The circuit is made up of four identical two input, two output cells. One for
each bit. The cells are connected in cascade, with lines, similar to a carry
between them. The value applied to the right most carry bit is 0,
(c) The circuit is redesigned with carry look ahead-like logic in order to speed up
the circuit in part (b) for use in larger circuits with 4n input bits.
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