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






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






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






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






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






6. A set of conductive paths hat connects the CPU to other parts of the computer to coordinate its operations and to communicate with external devices






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






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






9. A group of eight bits






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






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






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






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






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






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






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






17. 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.






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






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






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






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






22. A method for the automated testing of printed circuit boards in which the board is mounted on a fixture that resembles a bed of nails that makes contact with test points






23. 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.






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






25. Burst extended data output dynamic random- access memory






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






27. 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






28. Having two directions. the stored data can be shifted right or left






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






30. Having two opposites charge carriers within the transistor structure






31. A bidirectional set of conductive paths on which data or instruction codes are transferred into a microprocessor or on which the result of an operation is sent out from the microprocessor






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






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






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






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. A method for internally testing a PLD based on the JTAG standard (IEEE std.)






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






38. 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






39. The beginning address of a segment of memory






40. The ability of a capacitor to store electrical charge.






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






42. Altera HDL; a nonstandard HDL






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






44. The mathematics of logic circuits






45. 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.






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






47. In Boolean algebra - the OR operation






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






49. A measure of the ability of a reactive circuit to permit current; the reciprocal of impedance. the unit is the siemens






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