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






2. Describes a number system with a base of ten






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






4. A combined coder and decoder






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






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






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






8. The actual current in a branch






9. 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






10. The main part of a computer responsible for control and processing of data; the core of a DSP that processes the program instructions






11. 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






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






13. 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.






14. 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.






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






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






17. An electrical instrument used to measure current






18. A type of magnetic tape format






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






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






21. American wire gauge; a standardization based on wire diameter






22. Dual in - line memory module






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






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






25. 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






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






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






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






29. 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






30. American National Standards Institute






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






32. Altera HDL; a nonstandard HDL






33. The basic timing signal in a digital system; a periodic waveform in which the interval between pulses equals the time for one bit; the triggering input of a flip- flop






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






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






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






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






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






40. The maximum value of a voltage or current






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






42. Data Terminal equipment






43. A bridge circuit that is in the balanced state as indicated by 0 V across the output.






44. A combination of input literals that cannot occur and can be used as a 1 or 0 on a Karnaugh Map for simplification

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






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






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






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






49. The process of rippling an input carry to become the output carry in a full- adder when either or both of the input bits are 1's and the input carry is a 1






50. 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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