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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. A method for internally testing a PLD based on the JTAG standard (IEEE std.)






2. In Boolean algebra - the AND operation






3. An adverse condition that could occur if two or more devices try to communicate at the same time on a bus






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






5. Data Communications equipment






6. 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






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






8. 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






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






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

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11. A logic circuit used to add two binary numbers






12. 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






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






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






15. A class of integrated logic circuits that is implemented with a type of field effect transistor






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






17. The beginning address of a segment of memory






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






19. A type of magnetic tape format






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

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






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






23. 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






24. 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






25. A interconnection of electrical components designed to produce a desired result. A basic circuits consists of a source - a load and an interconnecting current path.






26. Altera HDL; a nonstandard HDL






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






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






29. 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.






30. A unit of the cross - sectional area of a wire.






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






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






33. A group of eight bits






34. The total number of data units(bits - nibbles - bytes - words) that a memory can store.






35. The action of a circuit in which it accepts current into its output from a load






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






37. A digital circuit that compares the magnitudes of two quantiities and produces an output indicating the relationship of the quantities






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






39. A digital code in which each of the decimal digits - 0 through 9 - is represented by a group of four bits






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






41. The process of converting an analog signal to digital form






42. A circuit that selects data from several inputs one at a time in a sequence and places them on the output; also called a multiplexer.






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






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






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






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






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






48. The process that prevents two sources from using a bus at the same time






49. The portion of the CPU that interfaces with the system buses and fetches instructions - reads operands - and writes results.






50. Having two opposites charge carriers within the transistor structure







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