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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. To decrease the binary state of a counter by one






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






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






4. 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






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






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






7. 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






8. A type of inductor used to block or choke off high frequencies






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






10. Having two opposites charge carriers within the transistor structure






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






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






13. Stands for Complementary Metal-Oxide Semiconductor and is implemented with a type of field transistor






14. American National Standards Institute






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






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






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






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






19. Consisting of numerals - letters - and other characters






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






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






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






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






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






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






26. Characterized by ten states or values






27. 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.






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






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






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






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






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






33. A set of conductive paths hat connects the CPU to other parts of the computer to coordinate its operations and to communicate with external devices






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






35. 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.






36. A type of PLD nonvolatile programmable link that can be left open or can be shorted once as directed by the program






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






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






39. 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






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






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






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






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






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






45. A logic circuit used to add two binary numbers






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






47. The unit of electrical current






48. 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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49. Sum of all the voltage drops in series equals to the source voltage

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50. An arrangement of electrical and/or electronic components interconnected in such a way as to perform a specified function