Test your basic knowledge |

Digital Fundamentals

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Having two opposites charge carriers within the transistor structure






2. The graph of a filter's frequency response showing the change in the output voltage to input voltage ratio expressed in dB as a function of frequency for a constant input voltage






3. The ability of a capacitor to store electrical charge.






4. The VHDL unit that describes the internal operation of a logic function; the internal functional arrangement of the elements that give a device its particular operating characteristics.






5. A binary digit - which can be either 1 or 0






6. The phasor combination of resistive power (true power) and reactive power. The unit is the volt- amperes (VA).






7. Dual in - line memory module






8. A receiving device on a bus






9. A relatively small - high- speed memory that stores the most recently used instructions or data from the larger but slower main memory






10. In relation to VHDL feature that permits operations to be processed in a parallel;that is operations that occur simultaneously






11. Dynamic random- access memory; a type of semiconductor memory that uses capacitors as the storage elements and is a volatile - read/write memory






12. The basic timing signal in a digital system; a periodic waveform in which the interval between pulses equals the time for one bit; the triggering input of a flip- flop






13. A type of IC package whose leads must pass through holes to the other side of a PC board






14. An instrument that can specify each of the other instruments on the bus as either a talker or a listener for the purpose of data transfer.






15. In a division operation the quantity that is being divided






16. A type of counter in which each stage is clocked from the output of the preceding stage.






17. The mathematics of logic circuits






18. An application program in development software packages that controls the design flow process and translates source code into object code in a format that can be logically tested or downloaded to a target device






19. The current left after the total load current is subtracted from the total current into the circuit






20. The process of rippling an input carry to become the output carry in a full- adder when either or both of the input bits are 1's and the input carry is a 1






21. A software compiler language for SPLD programming; a type of hardware description language (HDL)






22. A digital circuit capable of counting electronic events - such as pulses - by progressing through a sequence of binary states.






23. The process of producing an output carry in full- adder when both input bits are 1s.






24. Direct memory access; a method to directly interface a peripheral device to memory without using the CPU for control






25. The beginning address of a segment of memory






26. In addition (Oring) and multiplication (ANDing) of three or more variables - the order in which the variables are grouped makes no difference






27. The smallest particle of an element possessing the unique characteristics of that element.






28. A programming language that uses English like words and has a one- to- one correspondence to machine language






29. To connect 'end- to- end' as when several counters are connected from the terminal count output of one counter to the enable input of the next counter






30. Consisting of numerals - letters - and other characters






31. A one- way group of conductors from the to a memory - or other external device - on which the address code is sent






32. The location of a given storage cell or group of cells in a memory; a unique memory location containing on byte






33. Data Communications equipment






34. A measure of the ability of a reactive circuit to permit current; the reciprocal of impedance. the unit is the siemens






35. A condition where all the load currents are equal and the neutral current is zero






36. A type of semiconductor memory having capacitive storage cells that lose stored data over a period of time and therefore must be refreshed.






37. A unit of logic in an FPGA that is made up of multiple smaller logic modules and a local programmable interconnect that is used to connect logic modules within the CLB






38. A semiconductor device that conducts current in only one direction






39. Bipolar junction transistor; a semiconductor device used for switching or amplification. A BJT has two junctions - the base- emitter junction and the base- collector junction






40. A set of conductive paths hat connects the CPU to other parts of the computer to coordinate its operations and to communicate with external devices






41. A program that converts English- like mnemonics into machine code






42. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






43. In addition (ORing) and multiplication (ANDing) of two variables the order in which the variables are ORed or ANDed makes no difference






44. A combined coder and decoder






45. A program that translates an assembly language program for one type of microprocessor to an assembly language for another type of microprocessor






46. A combination of input literals that cannot occur and can be used as a 1 or 0 on a Karnaugh Map for simplification


47. A resettable protective device used for interrupting execessive current in an electric circuit






48. The rotational rate of a phasor which is related to the frequency of the sine wave that the phasor represents






49. A circuit with a complete current path






50. Having no stable state. An astable multivibrator oscillates between two quasi- stable states.