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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. 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






2. 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.






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






4. A VHDL feature that can be used to predefine the logic function for multiple use throughout a program or programs






5. In Boolean algebra - the OR operation






6. A basic logic operation in which a true(high) output occurs only when all the input conditions are true (high)






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






8. A type of magnetic tape format






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






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






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






12. 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






13. 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.






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






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






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






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






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






19. The beginning address of a segment of memory






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






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






22. A digital code in which each of the decimal digits - 0 through 9 - is represented by a group of four bits






23. 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






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






25. 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






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

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27. Data Communications equipment






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






29. The mathematics of logic circuits






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






31. An array of AND gates consisting of a matrix of programmable interconnection






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






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






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






35. A program that translates an assembly language program for one type of microprocessor to an assembly language for another type of microprocessor






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






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






38. 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






39. 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






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






41. 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.






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






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






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






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






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






47. Consisting of numerals - letters - and other characters






48. A digital counter having ten states






49. Data Terminal equipment






50. The actual current in a branch