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






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






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






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






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






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






7. Having two opposites charge carriers within the transistor structure






8. An arrangement of electrical and/or electronic components interconnected in such a way as to perform a specified function






9. A type of magnetic tape format






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






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






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






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






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






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






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






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






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






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






20. A receiving device on a bus






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






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






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






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






25. A circuit with a complete current path






26. 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






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






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






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






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






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






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






33. The actual current in a branch






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






35. 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






36. The interval of time occupied by a single bit in a sequence of bits; the period of the clock






37. Altera HDL; a nonstandard HDL






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






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






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






41. 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






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






43. A digital circuit capable of counting electronic events - such as pulses - by progressing through a sequence of binary states.






44. The maximum value of a voltage or current






45. In Boolean algebra - the OR operation






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






47. A group of eight bits






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






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






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







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