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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. An asynchronous input used to reset a flip- flop (make the Q output 0); to place a register or counter in the state in which it contains all 0's






2. Digital audio tape; a type of magnetic tape format






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






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






5. One of the three regions in a bipolar junction transistor






6. American Standard Code for Information Interchange; the most widely used alphanumeric code.






7. Sum of all the voltage drops in series equals to the source voltage

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8. A complex programmable logic device that consists basically of muliple SPLD arrays with programmable interconnections.






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






10. A filter that rejects a range of frequencies lying between two critical frequencies and passes frequencies above and below that range.






11. A reduction of the output signal compared to the input signal - resulting in a ratio with a value of less than 1 for the output voltage to the input voltage of a circuit.






12. Having two directions. the stored data can be shifted right or left






13. The effect created when a signal is sampled at less than twice the signal frequency. Aliasing creates unwanted frequencies that interfere with the signal frequency.






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






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






16. An electrical device consisting of two conductive plates separated by an insulating material and possessing the property of capacitance.






17. A series of bits describing a final design that is sent to the target device during programming






18. An array of AND gates consisting of a matrix of programmable interconnection






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






20. Digital Signal Processor; a special type of microprocessor that processes data in real time






21. 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.






22. A theorem that states that any amount of voltage sources and current sources can be combined into a single current source with a parallel resistor.

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23. A number given in ampere- hours determined by multiplying the current times the length of the time (h) a battery can deliver that current to a load






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






25. An electrical instrument used to measure current






26. An arrangement of electrical and/or electronic components interconnected in such a way as to perform a specified function






27. In addition - the number to which the addend is added






28. The opposition of a capacitor to permit current; the reciprocal of capacitive reactance. The unit is the siemens.






29. A notational system for logic symbols that specifies input and output relationships thus fully defining a given function






30. A document that specifies parameter values and operating conditions for an integrated circuits or other device






31. 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






32. A stage of the DSP pipeline operation in which instructions are assigned to functional units and are decoded.






33. Data Terminal equipment






34. Information in numeric - alphabetic - or other form.






35. 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






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






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






38. 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.






39. A bidirectional set of conductive paths on which data or instruction codes are transferred into a microprocessor or on which the result of an operation is sent out from the microprocessor






40. One current path in a parallel circuit; a current path that connects two nodes






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






42. Data Communications equipment






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






44. A digital counter having ten states






45. 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






46. Having two values or states; describes a number system that has a base of two and utilizes 1 and 0 as its digits






47. In Boolean algebra - the OR operation






48. A type of magnetic tape format






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






50. Consisting of numerals - letters - and other characters