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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 two terminal circuit containing voltage sources - current sources - and resistors can be modeled as a voltage source in series with a resistor






2. A combined coder and decoder






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






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






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






6. In Boolean algebra - the AND operation






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






8. A interconnection of electrical components designed to produce a desired result. A basic circuits consists of a source - a load and an interconnecting current path.






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






10. 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






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






12. A digital circuit that compares the magnitudes of two quantiities and produces an output indicating the relationship of the quantities






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






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






15. A digital counter having ten states






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






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






18. The beginning address of a segment of memory






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






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






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






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






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






24. Data Communications equipment






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






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






27. 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






28. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






29. 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.

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30. A software compiler language for SPLD programming; a type of hardware description language (HDL)






31. An adverse condition that could occur if two or more devices try to communicate at the same time on a bus






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






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






34. Altera HDL; a nonstandard HDL






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






36. Having two directions. the stored data can be shifted right or left






37. A type of inductor used to block or choke off high frequencies






38. Data Terminal equipment






39. In addition - the number to which the addend is added






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






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






42. 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






43. Characterized by ten states or values






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






45. The interval of time occupied by a single bit in a sequence of bits; the period of the clock






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

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






48. 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.






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






50. Direct memory access; a method to directly interface a peripheral device to memory without using the CPU for control