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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. Dual in - line memory module






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






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






4. 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.






5. A method for the automated testing of printed circuit boards in which the board is mounted on a fixture that resembles a bed of nails that makes contact with test points






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






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






8. A complex programmable logic device that consists basically of muliple SPLD arrays with programmable interconnections.






9. 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.






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






11. In relation to VHDL feature that permits operations to be processed in a parallel;that is operations that occur simultaneously






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






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






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






15. The beginning address of a segment of memory






16. 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






17. A digital counter having ten states






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






19. Describes a number system with a base of ten






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






21. 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






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






23. 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






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






25. A transformer in which the primary and secondary are in a single winding






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






27. A group of eight bits






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






29. 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.






30. The law that states ORing several variables and then ANDing the single variable with each of the several variables and the ORing the product






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






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






33. 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






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






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






36. In Boolean algebra - the OR operation






37. American Standard Code for Information Interchange; the most widely used alphanumeric code.






38. Altera HDL; a nonstandard HDL






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






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






41. In Boolean algebra - the AND operation






42. A logic circuit used to add two binary numbers






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






44. The process or sequence of operations carried out to program a target device






45. Having two opposites charge carriers within the transistor structure






46. Having two values or states; describes a number system that has a base of two and utilizes 1 and 0 as its digits






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






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






49. An application program in development software packages that controls the design flow process and translates source code into object code in a format that can be logically tested or downloaded to a target device






50. A circuit with a complete current path