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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 binary digit - which can be either 1 or 0






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






3. 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






4. Consisting of numerals - letters - and other characters






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






6. 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






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






8. A unit of the cross - sectional area of a wire.






9. A circuit with a complete current path






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






11. To decrease the binary state of a counter by one






12. A programming language that uses English like words and has a one- to- one correspondence to machine language






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






14. The law that states ORing several variables and then ANDing the single variable with each of the several variables and the ORing the product






15. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






16. 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






17. The maximum value of a voltage or current






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






19. A logic circuit used to add two binary numbers






20. A circuit that selects data from several inputs one at a time in a sequence and places them on the output; also called a multiplexer.






21. A nominally continuous electrical signal that varies in amplitude or frequency in response to changes in sound - light - heat - position - or pressure.






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






23. Burst extended data output dynamic random- access memory






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






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






26. 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.






27. Characterized by ten states or values






28. 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






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






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






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






32. An electrical instrument used to measure current






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






34. Digital audio tape; a type of magnetic tape format






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






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






37. 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






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






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






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






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






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






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






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






45. The unit of electrical current






46. Characteristic of cells in a Karnaugh map in which there is a single- variable change from one cell to another cell next to it on any of its four sides






47. A semiconductor device that conducts current in only one direction






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






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






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