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






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






3. A type of magnetic tape format






4. In addition (ORing) and multiplication (ANDing) of two variables the order in which the variables are ORed or ANDed makes no difference






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






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






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






8. A digital circuit device that converts coded information into another (familiar) or noncoded form






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






10. A digital counter having ten states






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






12. A logic gate that produces a High output only when all of the inputs are HIGH






13. The beginning address of a segment of memory






14. 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






15. A stage of the DSP pipeline operation in which instructions are assigned to functional units and are decoded.






16. A combined coder and decoder






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






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






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






20. The number of protons in a nucleus






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






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






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






24. 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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25. Consisting of numerals - letters - and other characters






26. American National Standards Institute






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






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






29. 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






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






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






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






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






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






35. 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.






36. 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.






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






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






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






40. The VHDL unit that describes the internal operation of a logic function; the internal functional arrangement of the elements that give a device its particular operating characteristics.






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






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






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






45. Data Terminal equipment






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






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

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






49. Burst extended data output dynamic random- access memory






50. The actual current in a branch