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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. Data Communications equipment






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






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






4. Describes a number system with a base of ten






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






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






7. 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






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






9. A logic circuit used to add two binary numbers






10. Having two opposites charge carriers within the transistor structure






11. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






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






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






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






15. Data Terminal equipment






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






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






18. A method of analog- to- digital conversion using a 1- bit quantization process






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






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






21. American Standard Code for Information Interchange; the most widely used alphanumeric code.






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






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






24. 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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25. The unit of electrical current






26. Digital Signal Processor; a special type of microprocessor that processes data in real time






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






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






29. 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.






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






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






32. The inverse of opposite of a number - in Boolean algebra - the inverse function - expressed with a bar over the variable. The complement of a 1 is a 0 - and vice versa






33. Having two directions. the stored data can be shifted right or left






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






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






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






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






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






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






40. 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






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






42. A circuit with a complete current path






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






44. The ability of a capacitor to store electrical charge.






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






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






47. American wire gauge; a standardization based on wire diameter






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






49. A group of eight bits






50. The maximum value of a voltage or current