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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. 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.






2. A program that converts English- like mnemonics into machine code






3. Characterized by ten states or values






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






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






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






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






8. A receiving device on a bus






9. Information in numeric - alphabetic - or other form.






10. Consisting of numerals - letters - and other characters






11. Digital audio tape; a type of magnetic tape format






12. A bidirectional set of conductive paths on which data or instruction codes are transferred into a microprocessor or on which the result of an operation is sent out from the microprocessor






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






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






15. A VHDL feature that can be used to predefine the logic function for multiple use throughout a program or programs






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






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






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






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






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






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






22. 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






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






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






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






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






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






28. A circuit that selects data from several inputs one at a time in a sequence and places them on the output; also called a multiplexer.






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






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






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






32. Describes a number system with a base of ten






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






34. 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






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






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






37. A circuit (digital service) that switches digital data from one input line to several output lines in a specified time sequence






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

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39. Data Communications equipment






40. Having two stable states. Flip- flops and latches are bistable multivibrators.






41. A relatively small - high- speed memory that stores the most recently used instructions or data from the larger but slower main memory






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






43. A type of bistable multivibrator in which the output assumes the state of the D input on the triggering edge of a clock pulse.






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






45. An energy source that uses a chemical reaction to convert chemical energy into electrical energy.






46. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






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






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






49. The process of converting an analog signal to digital form






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