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






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






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






4. A circuit with a complete current path






5. The process or sequence of operations carried out to program a target device






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






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






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






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






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






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






12. Having two opposites charge carriers within the transistor structure






13. 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






14. A type of IC package whose leads must pass through holes to the other side of a PC board






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






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






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






18. A logic circuit used to add two binary numbers






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






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






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






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






23. The unit of electrical current






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






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






26. An electrical instrument used to measure current






27. 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






28. 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






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






30. A connection at the midpoint of a winding in a transformer






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






32. The opposition of a capacitor to permit current; the reciprocal of capacitive reactance. The unit is the siemens.






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






34. 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.






35. A combined coder and decoder






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






37. Characterized by ten states or values






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






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






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






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






43. 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






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






45. The location of a given storage cell or group of cells in a memory; a unique memory location containing on byte






46. To decrease the binary state of a counter by one






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






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






49. A group of eight bits






50. 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.