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. The ratio of pulse width to period expressed as a percentage






2. A group of eight bits






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






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






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






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






7. A nominally continuous electrical signal that varies in amplitude or frequency in response to changes in sound - light - heat - position - or pressure.






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






9. Data Communications equipment






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






11. 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.






12. 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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13. Burst extended data output dynamic random- access memory






14. The mathematics of logic circuits






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






16. The maximum value of a voltage or current






17. A connection at the midpoint of a winding in a transformer






18. A combination of logic gates interconnected to produce a specified Boolean function with no storage or memory capability; sometimes called combinatorial logic






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






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






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






22. The time from the application of a valid memory address to the appearance of valid output data






23. A code within DOS that allows various operations on files and includes a primitive assembler; to eliminate a problem in hardware or software.






24. 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.






25. Stands for Complementary Metal-Oxide Semiconductor and is implemented with a type of field transistor






26. Having two opposites charge carriers within the transistor structure






27. 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






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






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






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






31. 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.






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






33. A type of magnetic tape format






34. 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






35. Data Terminal equipment






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






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






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






39. American National Standards Institute






40. 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






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






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






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






44. 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






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






46. A digital counter having ten states






47. A circuit that prevents loading of an input or output






48. A device used to convert an analog signal to a sequence of digital codes






49. An energy source that uses a chemical reaction to convert chemical energy into electrical energy.






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