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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 unit of the cross - sectional area of a wire.






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

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3. A type of magnetic tape format






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






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






6. A notational system for logic symbols that specifies input and output relationships thus fully defining a given function






7. 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






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






9. A device used to convert an analog signal to a sequence of digital codes






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






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






12. The number of protons in a nucleus






13. The ratio of pulse width to period expressed as a percentage






14. The unit of electrical current






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






16. A set of conductive paths hat connects the CPU to other parts of the computer to coordinate its operations and to communicate with external devices






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






18. 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






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






20. A combined coder and decoder






21. 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.






22. A reduction of the output signal compared to the input signal - resulting in a ratio with a value of less than 1 for the output voltage to the input voltage of a circuit.






23. A type of PLD nonvolatile programmable link that can be left open or can be shorted once as directed by the program






24. Consisting of numerals - letters - and other characters






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






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






27. Data Communications equipment






28. 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






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






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






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






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






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






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






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






36. An electrical device consisting of two conductive plates separated by an insulating material and possessing the property of capacitance.






37. The application of a dc voltage to an electronic device to produce a desired mode of operation






38. 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.






39. American National Standards Institute






40. 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






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






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






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






44. In Boolean algebra - the OR operation






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






46. 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.






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






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






49. A circuit with a complete current path






50. A method for internally testing a PLD based on the JTAG standard (IEEE std.)