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






2. The range of frequencies for which the current (or output voltage) is equal to or greater than 70.7% of its value at the resonant frequency that is considered to be passed by a filter.






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






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






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






6. The number of protons in a nucleus






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






8. A notational system for logic symbols that specifies input and output relationships thus fully defining a given function






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






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






11. A combination of logic gates interconnected to produce a specified Boolean function with no storage or memory capability; sometimes called combinatorial logic






12. The unit of electrical current






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






14. In Boolean algebra - the OR operation






15. Transistor-Transistor Logic and is implemented with bipolar junction transistors






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






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






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






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






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






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






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






23. A circuit with a complete current path






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






25. A reduction of the output signal compared to the input signal - resulting in a ratio with a value of less than 1 for the output voltage to the input voltage of a circuit.






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






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






28. A type of magnetic tape format






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






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






31. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






32. Altera HDL; a nonstandard HDL






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






34. 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.






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






36. Dynamic random- access memory; a type of semiconductor memory that uses capacitors as the storage elements and is a volatile - read/write memory






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






38. The actual current in a branch






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






40. 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.






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. An electrical instrument used to measure current






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






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






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






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






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






49. 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






50. The beginning address of a segment of memory