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Digital Fundamentals

Subject : engineering
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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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 transformer in which the primary and secondary are in a single winding

2. The phasor combination of resistive power (true power) and reactive power. The unit is the volt- amperes (VA).

3. Altera HDL; a nonstandard HDL

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

5. Consisting of numerals - letters - and other characters

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. In a PLD - a matrix formed by rows of product- term lines columns of input lines with a programmable cell at each junctions. In VHDL - an array is an ordered set of individual items called elements with a single identifier name.

8. 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

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

10. 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

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

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

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

14. A receiving device on a bus

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

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

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

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

19. Characterized by ten states or values

20. 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.

21. Dual in - line memory module

22. A digital counter having ten states

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

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

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

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

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

28. A logic circuit used to add two binary numbers

29. 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.

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

31. Characteristic of cells in a Karnaugh map in which there is a single- variable change from one cell to another cell next to it on any of its four sides

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

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

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

35. 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

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

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

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

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

40. American wire gauge; a standardization based on wire diameter

41. Burst extended data output dynamic random- access memory

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

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

44. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit

45. 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

46. Bipolar junction transistor; a semiconductor device used for switching or amplification. A BJT has two junctions - the base- emitter junction and the base- collector junction

47. Describes a number system with a base of ten

48. The number of protons in a nucleus

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

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