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Part66Module5.8Integrated Circuits(1of3)
Sub-Module 08 - Integrated Circuits
Operation and use of encoders and decoders; Function of encoder types; Uses of medium, large and very large scale integration.
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What is the device used to convert Binary Coded Decimal into separate supplies for a seven segment digital display?.                     
Option A.        Multiplexer.    
Option B.        Decoder.        
Option C.        Demultiplexer.           
Correct Answer is.      Decoder.        
Explanation.    RS catalogue...part number CA3161 (see www.RSwww.com website and enter the part number in their search box).
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1 point
On an IC, pin 1 is to the left of the notch. Which way are the pins numbered?.                  
Option A.        Left to right.  
Option B.        Anticlockwise.           
Option C.        Clockwise.     
Correct Answer is.      Anticlockwise.           
Explanation.    NIL.    http://www.kpsec.freeuk.com/components/ic.htm
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When 4 binary serial counters are connected in cascade for frequency division, what division factor is required?.               
Option A.        8.        
Option B.        16.      
Option C.        4.        
Correct Answer is.      16.      
Explanation.    Each serial counter changes its state once every 2 clock pulses. So 4 serial counters divides by   2x2x2x2 = 16.
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 3 binary counters in cascade. What is the division?.             
Option A.        32.      
Option B.        8.        
Option C.        16.      
Correct Answer is.      8.        
Explanation.    Each serial counter changes its state once every 2 clock pulses. So 3 serial counters divides by 2x2x2 = 8.
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Within a 3 bit frequency cascade, division is to.                   
Option A.        2.        
Option B.        4.        
Option C.        8.        
Correct Answer is.      8. 
Very Large Scale Integrated (VLSI) means the number of gates in a single IC is.              
Option A.        up to 10,000.  
Option B.        over 10,000.   
Option C.        up to 1000.     
Correct Answer is.      over 10,000.
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An encoder changes.              
Option A.        digital to analogue.    
Option B.        analogue to digital.    
Option C.        data from one format to another.       
Correct Answer is.      data from one format to another.   
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 RS flip-flop with Q at 1 is said to be.                  
Option A.        set.      
Option B.        reset.   
Option C.        zero.   
Correct Answer is.      set. 
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1 point
When a JK flip flop is used as a memory device, what type of memory would it be?.                       
Option A.        read-only.       
Option B.        non-volatile.   
Option C.        volatile.          
Correct Answer is.      volatile. 
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In an RS flip flop, output is one. This means it is.                 
Option A.        intermediate.  
Option B.        reset.   
Option C.        set.      
Correct Answer is.      set.      
Explanation.    Aircraft Electricity and Electronics Eismin 5th Edition Page 143. 
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 An ALU is an example of.                 
Option A.        MSI.   
Option B.        SSI.    
Option C.        LSI.    
Correct Answer is.      LSI. 
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With a j-k flip flop which is the output set.               
Option A.        q = 1.  
Option B.        q = 0.  
Option C.        either. 
Correct Answer is.      q = 1. 
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1 point
 Data is converted from serial to parallel and parallel to serial by.                 
Option A.        a synchronous counter.          
Option B.        a parallel register.       
Option C.        a shift register.           
Correct Answer is.      a shift register.
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 A typical characteristic of a CMOS is.                      
Option A.        high power dissipation.          
Option B.        high voltage handling.           
Option C.        low power dissipation.           
Correct Answer is.      low power dissipation.           
Explanation.    Aircraft Electricity and Electronics Eismin 5th Edition Page 140.
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The pins on an op amp are numbered.                       
Option A.        anticlockwise.
Option B.        clockwise.      
Option C.        cross ways.     
Correct Answer is.      anticlockwise.
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A parallel register.                  
Option A.        requires a clock pulse for each bit.     
Option B.        reads each bit to be stored simultaneously.   
Option C.        reads the stored data when logic 0 is applied to the read line.          
Correct Answer is.      reads each bit to be stored simultaneously.   
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A device, which converts serial to parallel and parallel to serial for arithmetical functions, is a.            
Option A.        Parallel to serial and serial to parallel converter.        
Option B.        Shift Register.
Option C.        Multiplexer and De-Multiplexer.       
Correct Answer is.      Shift Register.
Explanation.    Pulse code modulation/parallel to serial.
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1 point
Operation of a frequency counter is such that.                      
Option A.        it compares the incoming waveform with standard sine waves.       
Option B.        it detects incidences of peak value.   
Option C.        it changes the incoming waveform to a standard square wave.        
Correct Answer is.      it changes the incoming waveform to a standard square wave.        
Explanation.    Aircraft Electricity and Electronics, Eismin Page 168.
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1 point
An example of a small size integrated circuit would be.                   
Option A.        DIP switch.    
Option B.        Control Processor Unit.         
Option C.        ALU.  
Correct Answer is.      Control Processor Unit.         
Explanation.    A DIP switch is not an IC. ALU is an integrated part of the CPU. The 'Control Processor Unit' is another term used for the 'Central Processor Unit (CPU)' or sometimes a switching unit used in telegraphy (such as the touch-pad of a telephone) - the latter would be an SSI (defined as containing up to 100 transistors or gates).
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What is this?.             
Option A.        Counter.         
Option B.        Shift register. 
Option C.        Multiplexer.    
Correct Answer is.      Multiplexer. 
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  In a Master Slave, negative edge triggered JK flip flop, both inputs are connected to logic 1. The output.                
Option A.        will change state when the leading edge of the clock pulse is applied.         
Option B.        will change state when the trailing edge of the clock pulse is applied.         
Option C.        does not change state when a clock pulse is applied.
Correct Answer is.      will change state when the trailing edge of the clock pulse is applied.         
Explanation.    NIL.
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1 point
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