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. A electrical property of matter that exist because of an excess or a deficiency of electrons. Can be either positive or negative






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






3. The smallest particle of an element possessing the unique characteristics of that element.






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






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






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






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






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






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






10. The number of protons in a nucleus






11. 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






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






13. 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






14. The unit of electrical current






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






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






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






18. An electrical instrument used to measure current






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






20. The VHDL unit that describes the internal operation of a logic function; the internal functional arrangement of the elements that give a device its particular operating characteristics.






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






22. 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






23. An energy source that uses a chemical reaction to convert chemical energy into electrical energy.






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






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






26. 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.






27. The effect created when a signal is sampled at less than twice the signal frequency. Aliasing creates unwanted frequencies that interfere with the signal frequency.






28. Consisting of numerals - letters - and other characters






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






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






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






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






33. 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






34. The current left after the total load current is subtracted from the total current into the circuit






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






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






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






38. A receiving device on a bus






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






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






41. The normal level of a pulse waveform; the voltage level in the absence of a pulse.






42. 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






43. The mathematics of logic circuits






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






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






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






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






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






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






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