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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. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






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






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






4. The time from the application of a valid memory address to the appearance of valid output data






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






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






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






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






9. 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.






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






11. A program that translates an assembly language program for one type of microprocessor to an assembly language for another type of microprocessor






12. 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.






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






14. A transformer in which the primary and secondary are in a single winding






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






16. 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






17. 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.






18. A combined coder and decoder






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






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






21. The unit of electrical current






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






23. Having two opposites charge carriers within the transistor structure






24. 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






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






26. 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.






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






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






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






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






31. Describes a number system with a base of ten






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






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






34. A logic circuit used to add two binary numbers






35. One of the three regions in a bipolar Junction transistor(North junction of NpN)






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






37. An expression of variables and operators used to express the operation of a logic circuit






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






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






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






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






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






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






44. A method for the automated testing of printed circuit boards in which the board is mounted on a fixture that resembles a bed of nails that makes contact with test points






45. Characterized by ten states or values






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






47. 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






48. The number of protons in a nucleus






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






50. An electrical instrument used to measure current







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