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Business Issues of Microelectronics

Unit 3: Device Types

Question 1

How many types of integrated circuit structure are there?  

   1 

   2 

   3 

   4 


Question 2

How many basic integrated circuit processes are there?  

   1 

   2 

   3 

   4 


Question 3

Complete this sentence: 'Diffusion...'  

  requires high volumes  

  is used to create interconnect  

  is a high temperature process  


Question 4

Deposition uses which of the following?  

Masks  

Metal evaporation  

Very small feature sizes  

Silicon dioxide  

None of the above  



Question 5

Arrays can provide which of the following?  

  Digital functions  

  Analogue functions  

  Mixed signal functions  

  High clock speeds  

  All of the above  


Question 6

'Digital arrays are...'  

more expensive than FPGAs  

used at low volumes  

used at medium volumes  

used for digital functions  


 


Question 7

Digital Arrays are less expensive than which of the following?  

Microcontrollers  

Custom ASICs  

Discrete parts  

All of the above  
 



Question 8

Which of the following sentences are true?  

Merchant parts are sold in all volumes  

Merchant parts use especially tuned processes  

Merchant parts are available to all  

Merchant parts are high performance  
 



Question 9

Which of the following sentences are true?  

Utilisation is never 100%  

  Minimum utilisation is 10%  

  Utilisation depends on the logic structures used  

  All of the above  


Question 10

Arrays are not available on which of the following?  

 Mixed signal processes  

  High voltage processes  

  Bipolar processes  

  All of the above  

  None of the above  


Question 11

Full Custom ASICs have....  

  the lowest cost/sq. mm of silicon  

  the lowest variable cost of all ASICs  

  sensitivity to the NRE cost  

  all of the above  

  None of the above  


Question 12

Cell-based ASICs have which of the following?  

  Fixed cost reduced by regular structure  

  Fixed costs reduced by re-usable cells  

  Varible costs lower than custom ASICs  

  All of the above  

  None of the above  


Question 13

'Custom parts may be used...'  

  for specialist applications  

  when costs sensitivity is low  

  in anticipation of high volumes  

  all of the above  

  none of the above  


Question 14

'FPGAs are...'  

  mixed signal devices  

  merchant parts  

  software programmed  

  all of the above  

  none of the above  


Question 15

'FPGAs are...'  

one time programmable  

programmed in different fields of application  

re-programmable  

all of the above  
 



Question 16

'FPGAs can be...'  

programmed by making connections  

programmed by breaking connections  

needing expensive programming equipment  

all of the above  
 



Question 17

The success of a business is gauged by :  

They need fast logic  

  They are only sold to low volume applications  

  They are more sophisticated than EPLDs  

  They cannot be obtained in masked form  

  All of the above  

  None of the above  


Question 18

'Microcontrollers...'  

  are expensive  

  are difficult to programme 

  can only handle digital functions  

  all of the above  

  none of the above  


Question 19

Microcontrollers.....  

  require expensive support chips  

  incur additional investment in software  

  are only useful for simple tasks  

  all of the above  

  none of the above  


Question 20

Choice of technology depends on......  

volume alone  

the nature of the product  

usually more than one technology  

other issues than cost