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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 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.






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






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






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






5. An expression of variables and operators used to express the operation of a logic circuit






6. 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.






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






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






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






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






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






12. Bipolar junction transistor; a semiconductor device used for switching or amplification. A BJT has two junctions - the base- emitter junction and the base- collector junction






13. Dual in - line memory module






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






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






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






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






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






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






20. Describes a number system with a base of ten






21. The total number of data units(bits - nibbles - bytes - words) that a memory can store.






22. Arithmetic Logic Unit; the key processing element of a microprocessor that perfoms arithmetic and logic operations.






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






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






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






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






27. 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






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






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






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






31. A digital code in which each of the decimal digits - 0 through 9 - is represented by a group of four bits






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






33. Burst extended data output dynamic random- access memory






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






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






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






37. The maximum value of a voltage or current






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






39. American National Standards Institute






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






41. An electrical instrument used to measure current






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






43. Characterized by ten states or values






44. American Standard Code for Information Interchange; the most widely used alphanumeric code.






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






46. The beginning address of a segment of memory






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






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






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






50. In Boolean algebra - the OR operation







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