Advance Computer Architecture CS501 Assignment No. 03 20 January, 2014

Question No. 1:                                                                                     Marks 10
Given below is a 2x1 Multiplexer having 2 input lines (D0 & D1), one select input (S) and one output line (Y).

IF S=0, then Y= D0
Else (S=1) Y= D1                                                                
Figure

Thus, the output signal Y can be expressed as:
Y = S D0 + S D1

You are required to draw an 8x1 complete multiplexer with complete output signals.

Hint:
There will be three selected inputs in 8x1 multiplexer, i-e S0, S1 and S2

Question No. 2:                                                                                     Marks 5
Consider an I/O bus that can transfer 4 bytes of data in one bus cycle. Suppose that a designer considers attaching the following two components:

1. Hard drive, with a transfer rate of 54 Mbytes/sec
2. Video card, with a transfer rate of 128 Mbytes/sec.

What might be the implications of both the cases in above scenario?