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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 opposition of a capacitor to permit current; the reciprocal of capacitive reactance. The unit is the siemens.






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






3. The portion of the CPU that interfaces with the system buses and fetches instructions - reads operands - and writes results.






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






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






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






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






8. A digital code in which each of the decimal digits - 0 through 9 - is represented by a group of four bits






9. A logic circuit used to add two binary numbers






10. The basic timing signal in a digital system; a periodic waveform in which the interval between pulses equals the time for one bit; the triggering input of a flip- flop






11. Having two opposites charge carriers within the transistor structure






12. Stands for Complementary Metal-Oxide Semiconductor and is implemented with a type of field transistor






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






14. 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






15. An instrument that can specify each of the other instruments on the bus as either a talker or a listener for the purpose of data transfer.






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






17. American National Standards Institute






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






19. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






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






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






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






23. In Boolean algebra - the OR operation






24. The action of a circuit in which it accepts current into its output from a load






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






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






27. 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.






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






29. One current path in a parallel circuit; a current path that connects two nodes






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






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






32. The maximum value of a voltage or current






33. 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






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






35. Data Terminal equipment






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






37. 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






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






39. The actual current in a branch






40. A combined coder and decoder






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






42. 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






43. 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






44. 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.






45. A set of interconnections that interface one or more devices based on a standardized specification






46. 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.






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






48. Dual in - line memory module






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






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