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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. The graph of a filter's frequency response showing the change in the output voltage to input voltage ratio expressed in dB as a function of frequency for a constant input voltage






2. 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






3. 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.






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






5. The process of converting an analog signal to digital form






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






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






8. Having two values or states; describes a number system that has a base of two and utilizes 1 and 0 as its digits






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






10. 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.






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






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






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






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






15. The number of protons in a nucleus






16. In a PLD - a matrix formed by rows of product- term lines columns of input lines with a programmable cell at each junctions. In VHDL - an array is an ordered set of individual items called elements with a single identifier name.






17. Having two opposites charge carriers within the transistor structure






18. 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






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






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






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






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






23. A circuit with a complete current path






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






25. Dual in - line memory module






26. 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






27. 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






28. Burst extended data output dynamic random- access memory






29. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






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






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






32. The beginning address of a segment of memory






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






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






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






36. A digital circuit device that converts coded information into another (familiar) or noncoded form






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






38. To connect 'end- to- end' as when several counters are connected from the terminal count output of one counter to the enable input of the next counter






39. Data Communications equipment






40. 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






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






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






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






44. 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.






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






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






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






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






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






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






Can you answer 50 questions in 15 minutes?



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