Test your basic knowledge |

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






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






3. 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.






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






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






6. A measure of the ability of a reactive circuit to permit current; the reciprocal of impedance. the unit is the siemens






7. Basic input/output system; a set of programs in ROM that interfaces the I/) devices in a computer system






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






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






10. To decrease the binary state of a counter by one






11. A code within DOS that allows various operations on files and includes a primitive assembler; to eliminate a problem in hardware or software.






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






13. An electrical instrument used to measure current






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






15. A digital counter having ten states






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






17. 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.






18. The number of protons in a nucleus






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






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






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

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






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






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






26. 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






27. A receiving device on a bus






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






29. 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






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






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






32. 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






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






34. A logic circuit used to add two binary numbers






35. 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.






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






37. Data Terminal equipment






38. The law that states ORing several variables and then ANDing the single variable with each of the several variables and the ORing the product






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






40. The maximum value of a voltage or current






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






42. Burst extended data output dynamic random- access memory






43. In Boolean algebra - the OR operation






44. 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






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






46. A class of integrated logic circuits that is implemented with a type of field effect transistor






47. The unit of electrical current






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






49. 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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50. 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.