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






2. Altera HDL; a nonstandard HDL






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






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






5. In Boolean algebra - the AND operation






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






7. 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






8. The current left after the total load current is subtracted from the total current into the circuit






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






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






11. In addition (Oring) and multiplication (ANDing) of three or more variables - the order in which the variables are grouped makes no difference






12. The phasor combination of resistive power (true power) and reactive power. The unit is the volt- amperes (VA).






13. A logic gate that produces a High output only when all of the inputs are HIGH






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






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






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






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






18. To decrease the binary state of a counter by one






19. The portion of the CPU that interfaces with the system buses and fetches instructions - reads operands - and writes results.






20. 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.






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






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






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






24. 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






25. One of the three regions in a bipolar junction transistor






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






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






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






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






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






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






32. A one- way group of conductors from the to a memory - or other external device - on which the address code is sent






33. Bipolar junction transistor; a semiconductor device used for switching or amplification. A BJT has two junctions - the base- emitter junction and the base- collector junction






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






35. The VHDL unit that describes the internal operation of a logic function; the internal functional arrangement of the elements that give a device its particular operating characteristics.






36. A group of eight bits






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






38. A combined coder and decoder






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






40. Characterized by ten states or values






41. 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.






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






43. 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






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






45. One of the three regions in a bipolar Junction transistor(North junction of NpN)






46. 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.






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






48. 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.






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






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