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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. Burst extended data output dynamic random- access memory






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






3. 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






4. 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






5. A VHDL feature that can be used to predefine the logic function for multiple use throughout a program or programs






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






7. Describes a number system with a base of ten






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






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






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






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






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






13. Sum of all the voltage drops in series equals to the source voltage


14. Sum of all currents entering a node is equal to the sum of all currents leaving the same node


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






16. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






17. 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






18. A resettable protective device used for interrupting execessive current in an electric circuit






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






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






21. 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






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






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






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






25. 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






26. Having two opposites charge carriers within the transistor structure






27. A type of magnetic tape format






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






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






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






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






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






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






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






35. 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.


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






37. Altera HDL; a nonstandard HDL






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






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






40. 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.






41. 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.






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






43. Data Communications equipment






44. A combination of input literals that cannot occur and can be used as a 1 or 0 on a Karnaugh Map for simplification


45. A number given in ampere- hours determined by multiplying the current times the length of the time (h) a battery can deliver that current to a load






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






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






48. 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






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






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