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quiz5_sol - CS 061 Computer Organization Quiz 5 Monday 2/13...

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1 CS 061 – Computer Organization Winter - 2012 Quiz 5 – Monday 2/13 solution 1. You are given a box of 2k by 4-bit memory chips, and asked to construct from them a 128k by 1-byte memory module, utilising the Chip Select (CS) input on each of the chips. This will require "two levels" of addressing – i.e. a portion of the address will be input to the address pins of the individual chips, and a portion will be input to a module-level decoder driving the chips' CS pins. How many bits will be input to this module-level decoder? a. 2 b. 3 c. 4 d. 5 e. 6 f. 8 The next two questions refer to the following scenario: Consider an elevator that connects the 1 st , 2 nd , 3 rd & 4 th floors of a building, able to make "express" rides, e.g. it can.go from the 1 st floor to the 3 rd or 4 th floor without stopping at imtermediate floors (and vice versa). The controller for this system is an example of a finite state machine (fsm) , whose state space consists of the elevator stopped at each of the four floors, with the doors either closed or open (i.e. doors open & doors closed
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