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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 type of magnetic tape format






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






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






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






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






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






7. The process of converting an analog signal to digital form






8. 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.






9. The total number of data units(bits - nibbles - bytes - words) that a memory can store.






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






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






12. 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.






13. 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






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






15. 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






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






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






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






19. A group of eight bits






20. In addition (ORing) and multiplication (ANDing) of two variables the order in which the variables are ORed or ANDed makes no difference






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






22. 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






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






24. One of the three regions in a bipolar junction transistor






25. 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






26. 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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27. Characterized by ten states or values






28. 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.






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






30. Consisting of numerals - letters - and other characters






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






32. Dual in - line memory module






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






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






35. The portion within the microprocessor that provides the timing and control signals for getting data into and out of the microprocessor and for synchronizing the execution of instructions.






36. Data Communications equipment






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






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






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






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






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






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

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






44. In Boolean algebra - the AND operation






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






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






47. Information in numeric - alphabetic - or other form.






48. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






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






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

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Can you answer 50 questions in 15 minutes?



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