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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 number of protons in a nucleus






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

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






4. A type of inductor used to block or choke off high frequencies






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






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






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






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






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






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






11. Burst extended data output dynamic random- access memory






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






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






14. 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.






15. Characterized by ten states or values






16. 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.






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






18. 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






19. A digital counter having ten states






20. 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






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






22. Dual in - line memory module






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






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






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






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






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






28. 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






29. 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.






30. 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.






31. A semiconductor device that conducts current in only one direction






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






33. A group of eight bits






34. The beginning address of a segment of memory






35. 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






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






37. A resettable protective device used for interrupting execessive current in an electric circuit






38. To connect 'end- to- end' as when several counters are connected from the terminal count output of one counter to the enable input of the next counter






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






40. The average of a sine wave over one half- cycle. It is 0.637 times the peak value.






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






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






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






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






45. An electrical instrument used to measure current






46. A type of counter in which each stage is clocked from the output of the preceding stage.






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






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






50. Having two opposites charge carriers within the transistor structure