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   The number of comparators in a parallel conversion type 8-bit A to D converter 


is  


(a)  8  


(b)  16  


(c)  255  


(d)  256  


The number of the comparisons carried out in a 4-bit flash-type A/D convertor 


is  


(a)  16  


(b)  15  


(c)  4  


(d)  14  


A system has a word length of 4-bits.If in this system -ve numbers are 


represented by their Two's compliment,then the range of numbers that can 


be represented by the word length is  


(a)  -8 to +8  


(b)  -7 to +7  


(c)  -16 to +16  


(d)  none of these

Author	Message
Adhiti Newbie Joined: 02Feb2007 Online Status: Offline Posts: 32	Topic: questions Posted: 02Feb2007 at 12:02pm
	The number of comparators in a parallel conversion type 8-bit A to D converter is (a) 8 (b) 16 (c) 255 (d) 256 The number of the comparisons carried out in a 4-bit flash-type A/D convertor is (a) 16 (b) 15 (c) 4 (d) 14 A system has a word length of 4-bits.If in this system -ve numbers are represented by their Two's compliment,then the range of numbers that can be represented by the word length is (a) -8 to +8 (b) -7 to +7 (c) -16 to +16 (d) none of these Post Resume: Click here to Upload your Resume & Apply for Jobs

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Alok Newbie Joined: 02Feb2007 Online Status: Offline Posts: 19	Posted: 02Feb2007 at 3:44pm
	parallel type and flash type same.no of comparators required are ((2^n)-1) the gives 255 for first Q and 15 for second Q range of 2's complement is -8 to 7 hence none of these _________________ the light at the end of the tunnel myt b an in comming train !!!!!!!
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