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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. 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






2. A logic circuit used to add two binary numbers






3. A set of interconnections that interface one or more devices based on a standardized specification






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






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






6. In Boolean algebra - the AND operation






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






8. The opposition of a capacitor to permit current; the reciprocal of capacitive reactance. The unit is the siemens.






9. In Boolean algebra - the OR operation






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






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






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






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






14. The mathematics of logic circuits






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






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






17. 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






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






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






20. 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.






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






22. The time from the application of a valid memory address to the appearance of valid output data






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






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






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






26. 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.






27. A notational system for logic symbols that specifies input and output relationships thus fully defining a given function






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






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






30. 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.






31. The unit of electrical current






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






33. 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.






34. A code within DOS that allows various operations on files and includes a primitive assembler; to eliminate a problem in hardware or software.






35. 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






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






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






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






39. The actual current in a branch






40. The application of a dc voltage to an electronic device to produce a desired mode of operation






41. 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






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






43. The beginning address of a segment of memory






44. In addition (ORing) and multiplication (ANDing) of two variables the order in which the variables are ORed or ANDed makes no difference






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






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






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






48. Dual in - line memory module






49. Consisting of numerals - letters - and other characters






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