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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 type of magnetic tape format






2. A theorem that states that any amount of voltage sources and current sources can be combined into a single current source with a parallel resistor.

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






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






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






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






7. The process that prevents two sources from using a bus at the same time






8. 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






9. Data Terminal equipment






10. Having two opposites charge carriers within the transistor structure






11. The unit of electrical current






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






13. American National Standards Institute






14. 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.






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






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






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






18. 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.






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






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






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






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






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






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






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






27. Characterized by ten states or values






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






29. A bridge circuit that is in the balanced state as indicated by 0 V across the output.






30. 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






31. The action of a circuit in which it accepts current into its output from a load






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






33. The normal level of a pulse waveform; the voltage level in the absence of a pulse.






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






35. Data Communications equipment






36. A semiconductor device that conducts current in only one direction






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






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






39. 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






40. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






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

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42. The actual current in a branch






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






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






45. 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.






46. The mathematics of logic circuits






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






48. 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






49. The range of frequencies for which the current (or output voltage) is equal to or greater than 70.7% of its value at the resonant frequency that is considered to be passed by a filter.






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