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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 set of conductive paths hat connects the CPU to other parts of the computer to coordinate its operations and to communicate with external devices






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






3. An adverse condition that could occur if two or more devices try to communicate at the same time on a bus






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






5. An electrical instrument used to measure current






6. 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.






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






9. 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.






10. The mathematics of logic circuits






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






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






13. The location of a given storage cell or group of cells in a memory; a unique memory location containing on byte






14. The unit of electrical current






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






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






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






18. The maximum value of a voltage or current






19. In relation to VHDL feature that permits operations to be processed in a parallel;that is operations that occur simultaneously






20. A circuit with a complete current path






21. A relatively small - high- speed memory that stores the most recently used instructions or data from the larger but slower main memory






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






23. The rotational rate of a phasor which is related to the frequency of the sine wave that the phasor represents






24. A type of magnetic tape format






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






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






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






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






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






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






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

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






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






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






35. An energy source that uses a chemical reaction to convert chemical energy into electrical energy.






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






37. Dual in - line memory module






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






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






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






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






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






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






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






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






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






47. American National Standards Institute






48. 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.






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






50. 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.