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






2. In relation to VHDL feature that permits operations to be processed in a parallel;that is operations that occur simultaneously






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






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






5. 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






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






7. 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.






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

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






10. The unit of electrical current






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






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






13. 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






14. Data Terminal equipment






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






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






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






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






19. An asynchronous input used to reset a flip- flop (make the Q output 0); to place a register or counter in the state in which it contains all 0's






20. The maximum value of a voltage or current






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






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






23. A receiving device on a bus






24. The range of frequencies for which the current (or output voltage) is equal to or greater than 70.7% of its value at the resonant frequency that is considered to be passed by a filter.






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. A series of bits describing a final design that is sent to the target device during programming






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






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






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






30. The main part of a computer responsible for control and processing of data; the core of a DSP that processes the program instructions






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






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






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






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






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






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






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






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






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






40. The number of protons in a nucleus






41. A combined coder and decoder






42. 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






43. 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






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






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






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






47. A logic gate that produces a High output only when all of the inputs are HIGH






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






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






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