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






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






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






4. 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






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






6. A type of semiconductor memory that stores data in the form of charge packets and is serially accessed






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






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






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






10. Describes a number system with a base of ten






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






12. 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






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






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






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






16. A type of magnetic tape format






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






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






19. In relation to VHDL feature that permits operations to be processed in a parallel;that is operations that occur simultaneously






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






21. 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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22. Digital audio tape; a type of magnetic tape format






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






24. 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.






25. Characterized by ten states or values






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






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






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






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






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






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






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






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






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






35. Having two opposites charge carriers within the transistor structure






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






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






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






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






40. The mathematics of logic circuits






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






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






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






44. 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






45. A digital counter having ten states






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






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






48. 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.






49. Data Terminal equipment






50. Burst extended data output dynamic random- access memory






Can you answer 50 questions in 15 minutes?



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