Question

Question 2.2. (TCO 1) What is the modulus of a counter which counts from 0 to 7 and then recycles back to zero? (Points : 6)       MOD-5
       MOD-6
       MOD-7
       MOD-8

Question 3.3. (TCO 1) What is the modulus of a counter which counts from 3 to 9 and then recycles back to 3? (Points : 6)       MOD-9
       MOD-8
       MOD-7
       MOD-6

Question 4.4. (TCO 1) How many flip-flops are required to make a counter which counts from 0 to 3? (Points : 6)       Two
       Three
       Four
       Five

Question 5.5. (TCO 1) How many flip-flops are required to make a counter which counts from 0 to 5? (Points : 6)       Two
       Three
       Four
       Five

Question 6.6. (TCO 1) What is the maximum value possible out of a binary counter which has three flip-flops? (Points : 6)       3
       7
       8
       12

Question 7.7. (TCO 1) What must be connected to the J and K inputs of each flip-flop in order to construct an asynchronous MOD-8 counter? (Points : 6)       J is connected to high and K is connected to low
       Both J and K are connected to low
       J is connected to low and K is connected to high
       Both J and K are connected to high

Question 8.8. (TCO 1) What type of counter is constructed by connecting the Q output of each flip-flop to the clock input of the next flip-flop while the outputs come from Q? (Points : 6)       An asynchronous
       A down-counter
       An up-counter
       Both A and C

Question 9.9. (TCO 2) A parallel-in, serial-out shift register is loaded initially with 1010. What will the register contain after two clock pulses if the serial input is LOW? (Points : 6)       1110
       0001
       0011
       0010

Question 10.10. (TCO 2) Which abbreviation describes the shift register used for parallel-to-parallel conversion? (Points : 6)       SISO
       PISO
       SIPO
       PIPO

Question 11.11. (TCO 3) How many bits wide is the internal Data bus of a typical 8-bit microprocessor? (Points : 6)       4
       8
       12
       16

Question 12.12. (TCO 3) What is the maximum memory size of a microprocessor with a 15-bit address bus? (Points : 6)       1 Mbyte
       8 Mbyte
       32 Kbyte
       64 Kbyte

Question 13.13. (TCO 3) Which microprocessor bus is uni-directional? (Points : 6)       Data bus
       Control bus
       Address bus
       Both B and C above
 

Question 14.14. (TCO 3) The binary code that controls a microprocessors is called (Points : 6)       basic.
       CPU language.
       machine code.
       DOS.

Question 15.15. (TCO 3) How many I/O lines does the 8051 microprocessor have? (Points : 6)       16
       48
       32
       64
 

Question 16.16. (TCO 3) Which of the following stores the address of the last entry of the stack? (Points : 6)       Interrupt control
       Program counter
       General purpose registers
       None of the above

Question 17.17. (TCO 3) What is the function of RST pin on the 8051? (Points : 6)       A low on this pin resets the microcontroller.
       A low on this pin sets the microcontroller.
       A high on this pin sets the microcontroller.
       A high on this pin resets the microcontroller.
 

Question 18.18. (TCO 3) 8051 is a (Points : 6)       80-pin processor.
       20-pin processor.
       60-pin processor.
       40-pin processor.
 



Question 19.19. (TCO 3) The 8085 is a (Points : 6)       microprocessor.
       microcontroller.
       computer.
       None of the above
 

(TCO 1) Explain what a ripple counter is and how many flip flops a ripple counter should have to count 0–12 (decimal)
(TCO 2) Explain how data is parallel loaded into a shift register constructed from J-K flip-flops.

(TCO 3) What are the names and functions of the three buses associated with microprocessors? 

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