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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 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.






2. Direct memory access; a method to directly interface a peripheral device to memory without using the CPU for control






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






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






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






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






7. 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






8. Altera HDL; a nonstandard HDL






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






10. 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






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






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






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






14. Sum of all currents entering a node is equal to the sum of all currents leaving the same node

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15. A theorem that states that any amount of voltage sources and current sources can be combined into a single current source with a parallel resistor.

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






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






18. Transistor-Transistor Logic and is implemented with bipolar junction transistors






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






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






21. Dual in - line memory module






22. 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






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






24. In Boolean algebra - the AND operation






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






26. 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.






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






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






29. 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.






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






31. 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






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






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






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






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






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






37. A series of bits describing a final design that is sent to the target device during programming






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






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






40. In Boolean algebra - the OR operation






41. 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






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






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






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






45. A type of semiconductor memory that stores data in the form of charge packets and is serially accessed






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






47. 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






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






49. A combination of logic gates interconnected to produce a specified Boolean function with no storage or memory capability; sometimes called combinatorial logic






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







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