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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 basic logic operation in which a true(high) output occurs only when all the input conditions are true (high)






2. A group of eight bits






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






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






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






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






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






8. American wire gauge; a standardization based on wire diameter






9. The process of rippling an input carry to become the output carry in a full- adder when either or both of the input bits are 1's and the input carry is a 1






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






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






12. The beginning address of a segment of memory






13. The unit of electrical current






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






15. In Boolean algebra - the OR operation






16. A digital counter having ten states






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






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






19. The mathematics of logic circuits






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






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






22. A number given in ampere- hours determined by multiplying the current times the length of the time (h) a battery can deliver that current to a load






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






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






25. 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.






26. 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






27. The main part of a computer responsible for control and processing of data; the core of a DSP that processes the program instructions






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






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






30. A circuit with a complete current path






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






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






33. The ratio of pulse width to period expressed as a percentage






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






35. A receiving device on a bus






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






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






38. A type of magnetic tape format






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






40. 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.






41. 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.






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






43. 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.






44. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






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






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






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






48. 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.






49. A type of semiconductor memory having capacitive storage cells that lose stored data over a period of time and therefore must be refreshed.






50. The graph of a filter's frequency response showing the change in the output voltage to input voltage ratio expressed in dB as a function of frequency for a constant input voltage







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