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posted by  ilvmyff on 11/4/2009 9:21:21 PM  |  status: Live  |  Earned Karma: 25

Implement a four bit rotate shifter

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Digital Circuits N/A N/A N/A 11/10/2009 at 7:00:00 PM
Question Details:
Implement a four bit shifter that can rotate an input one bit left or right using some 2-to-1 multiplexers which have NO enables (do not implement the MUX) and other gates. The inputs are I0,I1,I2,I3, right/left (right=0,left=1), and a module enable (outputs are zero when module is disabled). The outputs are 00,01,02 and 03. Be sure to label all inputs on the multiplexers including S, I0,I1.

I have no idea where to start but we were given this setup on the paper.

I0   I1   I2   I3

Right/Left                                                                                                                           Enable

D0   D1   D2   D3
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