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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 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.






2. An electrical instrument used to measure current






3. The graph of a filter's frequency response showing the change in the output voltage to input voltage ratio expressed in dB as a function of frequency for a constant input voltage






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






5. 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.






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






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






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






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






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






11. In a division operation the quantity that is being divided






12. In a pulse waveform - the height or maximum value of the pulse as measured from its low level.






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






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






15. A circuit with a complete current path






16. Altera HDL; a nonstandard HDL






17. The maximum value of a voltage or current






18. A logic circuit used to add two binary numbers






19. 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






20. 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






21. The beginning address of a segment of memory






22. A digital counter having ten states






23. The mathematics of logic circuits






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






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






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






27. A unit of the cross - sectional area of a wire.






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






29. In Boolean algebra - the AND operation






30. 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






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






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






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






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






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






36. A receiving device on a bus






37. Basic input/output system; a set of programs in ROM that interfaces the I/) devices in a computer system






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






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






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






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






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






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






44. 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






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






46. A digital circuit capable of counting electronic events - such as pulses - by progressing through a sequence of binary states.






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






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






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






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