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






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






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






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






5. A receiving device on a bus






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






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






8. 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






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






10. A method of analog- to- digital conversion using a 1- bit quantization process






11. The beginning address of a segment of memory






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






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






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






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






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






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






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






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






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






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






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






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






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






25. Information in numeric - alphabetic - or other form.






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






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






28. A type of PLD nonvolatile programmable link that can be left open or can be shorted once as directed by the program






29. A group of eight bits






30. 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






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






32. 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






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






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






35. A type of inductor used to block or choke off high frequencies






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






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






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






39. A resettable protective device used for interrupting execessive current in an electric circuit






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






41. A theorem that states that any amount of voltage sources and current sources can be combined into a single current source with a parallel resistor.

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42. 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






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






44. 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






45. The unit of electrical current






46. Having two opposites charge carriers within the transistor structure






47. 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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48. A set of interconnections that interface one or more devices based on a standardized specification






49. 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






50. 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