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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. 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






2. 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.






3. In a pulse waveform - the height or maximum value of the pulse as measured from its low level.






4. 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






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






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






7. A logic gate that produces a High output only when all of the inputs are HIGH






8. Arithmetic Logic Unit; the key processing element of a microprocessor that perfoms arithmetic and logic operations.






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






11. Consisting of numerals - letters - and other characters






12. A digital circuit device that converts coded information into another (familiar) or noncoded form






13. The average of a sine wave over one half- cycle. It is 0.637 times the peak value.






14. 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






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






16. The process or sequence of operations carried out to program a target device






17. A method of analog- to- digital conversion using a 1- bit quantization process






18. A VHDL feature that can be used to predefine the logic function for multiple use throughout a program or programs






19. 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






20. A group of eight bits






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






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






23. Sum of all currents entering a node is equal to the sum of all currents leaving the same node

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






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






26. The portion within the microprocessor that provides the timing and control signals for getting data into and out of the microprocessor and for synchronizing the execution of instructions.






27. A circuit with a complete current path






28. Data Terminal equipment






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






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






31. A type of bistable multivibrator in which the output assumes the state of the D input on the triggering edge of a clock pulse.






32. The normal level of a pulse waveform; the voltage level in the absence of a pulse.






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






34. 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






35. A basic logic operation in which a true(high) output occurs only when all the input conditions are true (high)






36. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






37. A transformer in which the primary and secondary are in a single winding






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






39. One of the three regions in a bipolar Junction transistor(North junction of NpN)






40. Describes a number system with a base of ten






41. The application of a dc voltage to an electronic device to produce a desired mode of operation






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






43. An expression of variables and operators used to express the operation of a logic circuit






44. Burst extended data output dynamic random- access memory






45. A logic circuit used to add two binary numbers






46. A bridge circuit that is in the balanced state as indicated by 0 V across the output.






47. Characterized by ten states or values






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






49. The digit generated when the sum of two binary digits exceeds 1






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