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






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






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






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






5. Data Communications equipment






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






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






9. In Boolean algebra - the OR operation






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






11. Altera HDL; a nonstandard HDL






12. A type of semiconductor memory that stores data in the form of charge packets and is serially accessed






13. 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.






14. An electrical instrument used to measure current






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






16. Basic input/output system; a set of programs in ROM that interfaces the I/) devices in a computer system






17. The main part of a computer responsible for control and processing of data; the core of a DSP that processes the program instructions






18. In addition - the number that is added to another number called the augend






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






20. 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






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






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






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






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






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






26. Characterized by ten states or values






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






28. 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.






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. The actual current in a branch






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






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






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






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






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






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






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






38. American National Standards Institute






39. The maximum value of a voltage or current






40. The mathematics of logic circuits






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






42. To decrease the binary state of a counter by one






43. Having two stable states. Flip- flops and latches are bistable multivibrators.






44. The number of protons in a nucleus






45. 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






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






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






48. 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






49. Dual in - line memory module






50. A two terminal circuit containing voltage sources - current sources - and resistors can be modeled as a voltage source in series with a resistor