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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 ratio of pulse width to period expressed as a percentage






2. The unit of electrical current






3. A bridge circuit that is in the balanced state as indicated by 0 V across the output.






4. The mathematics of logic circuits






5. A one- way group of conductors from the to a memory - or other external device - on which the address code is sent






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






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






8. A connection at the midpoint of a winding in a transformer






9. 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.






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






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






12. A type of magnetic tape format






13. The process that prevents two sources from using a bus at the same time






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


15. The location of a given storage cell or group of cells in a memory; a unique memory location containing on byte






16. The actual current in a branch






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






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






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






20. A logic circuit used to add two binary numbers






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






22. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






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






24. 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






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






26. Data Communications equipment






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






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






29. Describes a number system with a base of ten






30. Burst extended data output dynamic random- access memory






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






32. The number of protons in a nucleus






33. 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






34. In addition - the number that is added to another number called the augend






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






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






37. Having two opposites charge carriers within the transistor structure






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






39. A circuit with a complete current path






40. 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






41. 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






42. 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






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






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






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






46. A digital counter having ten states






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






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






49. Consisting of numerals - letters - and other characters






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