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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. In Boolean algebra - the OR operation






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






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






4. A type of bistable multivibrator in which the output assumes the state of the D input on the triggering edge of a clock pulse.






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






6. A unit of the cross - sectional area of a wire.






7. Data Terminal equipment






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






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






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






11. To connect 'end- to- end' as when several counters are connected from the terminal count output of one counter to the enable input of the next counter






12. American National Standards Institute






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






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






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






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






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






18. The average of a sine wave over one half- cycle. It is 0.637 times the peak value.






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






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






21. 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






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






23. A circuit with a complete current path






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






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






26. 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.






27. 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.






28. Having two opposites charge carriers within the transistor structure






29. A group of eight bits






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






31. 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






32. An expression of variables and operators used to express the operation of a logic circuit






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






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






35. An electrical instrument used to measure current






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






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






38. 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






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






40. Data Communications equipment






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






42. 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.






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






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






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






46. A nominally continuous electrical signal that varies in amplitude or frequency in response to changes in sound - light - heat - position - or pressure.






47. 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






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






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






50. The actual current in a branch