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






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






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






4. A logic circuit used to add two binary numbers






5. 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






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






7. The process of producing an output carry in full- adder when both input bits are 1s.






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






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






10. A receiving device on a bus






11. 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.






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






13. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






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






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






16. In addition - the number to which the addend is added






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






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

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19. 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






20. The smallest particle of an element possessing the unique characteristics of that element.






21. 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.






22. Describes a number system with a base of ten






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






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






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






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






27. A combination of logic gates interconnected to produce a specified Boolean function with no storage or memory capability; sometimes called combinatorial logic






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






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






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






31. A type of magnetic tape format






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






33. 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.






34. In Boolean algebra - the OR operation






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






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






37. Burst extended data output dynamic random- access memory






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






39. A device used to convert an analog signal to a sequence of digital codes






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






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. Information in numeric - alphabetic - or other form.






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






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






45. The inverse of opposite of a number - in Boolean algebra - the inverse function - expressed with a bar over the variable. The complement of a 1 is a 0 - and vice versa






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






47. 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.






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






49. The unit of electrical current






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







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