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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 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






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






3. An electrical instrument used to measure current






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






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






6. The inverse of opposite of a number - in Boolean algebra - the inverse function - expressed with a bar over the variable. The complement of a 1 is a 0 - and vice versa






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






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






9. One of the three regions in a bipolar Junction transistor(North junction of NpN)






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






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






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






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






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






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






16. Having two opposites charge carriers within the transistor structure






17. 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






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






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






20. Consisting of numerals - letters - and other characters






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






22. In addition (Oring) and multiplication (ANDing) of three or more variables - the order in which the variables are grouped makes no difference






23. The number of protons in a nucleus






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






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






26. A complex programmable logic device that consists basically of muliple SPLD arrays with programmable interconnections.






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






28. 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.






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






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






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






32. A code within DOS that allows various operations on files and includes a primitive assembler; to eliminate a problem in hardware or software.






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






34. The beginning address of a segment of memory






35. A circuit with a complete current path






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






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






38. The actual current in a branch






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






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






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






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






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






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






45. Altera HDL; a nonstandard HDL






46. 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






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






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






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






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