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. Information in numeric - alphabetic - or other form.






2. Data Terminal equipment






3. A combined coder and decoder






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






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






6. A logic circuit used to add two binary numbers






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






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






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






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






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






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






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






14. The beginning address of a segment of memory






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






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






17. The average of a sine wave over one half- cycle. It is 0.637 times the peak value.






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






19. Burst extended data output dynamic random- access memory






20. 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






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






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






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






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






25. 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






26. Dynamic random- access memory; a type of semiconductor memory that uses capacitors as the storage elements and is a volatile - read/write memory






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






28. Data Communications equipment






29. The unit of electrical current






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






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






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


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






34. Transistor-Transistor Logic and is implemented with bipolar junction transistors






35. 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






36. The basic timing signal in a digital system; a periodic waveform in which the interval between pulses equals the time for one bit; the triggering input of a flip- flop






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






38. 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.






39. Describes a number system with a base of ten






40. A binary digit - which can be either 1 or 0






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






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






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






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






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






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






47. 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






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






49. 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.






50. 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