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 law that states ORing several variables and then ANDing the single variable with each of the several variables and the ORing the product






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






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






4. An electrical device consisting of two conductive plates separated by an insulating material and possessing the property of capacitance.






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






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






7. A type of magnetic tape format






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






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






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






11. 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






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






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






14. The beginning address of a segment of memory






15. Altera HDL; a nonstandard HDL






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






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






18. 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.






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






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






21. Arithmetic Logic Unit; the key processing element of a microprocessor that perfoms arithmetic and logic operations.






22. A one- way group of conductors from the to a memory - or other external device - on which the address code is sent






23. A circuit (digital service) that switches digital data from one input line to several output lines in a specified time sequence






24. A logic circuit used to add two binary numbers






25. A combined coder and decoder






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






27. The process of converting an analog signal to digital form






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






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






30. The actual current in a branch






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






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






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






34. Digital Signal Processor; a special type of microprocessor that processes data in real time






35. Data Terminal equipment






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






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






38. 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






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






40. 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






41. 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






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






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






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






45. In Boolean algebra - the OR operation






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






47. 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






48. 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






49. A software compiler language for SPLD programming; a type of hardware description language (HDL)






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