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






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






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






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






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






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






7. 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.






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






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






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






11. Data Terminal equipment






12. A receiving device on a bus






13. A condition where all the load currents are equal and the neutral current is zero






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






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






16. The beginning address of a segment of memory






17. The interval of time occupied by a single bit in a sequence of bits; the period of the clock






18. A software compiler language for SPLD programming; a type of hardware description language (HDL)






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






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






21. 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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22. A notational system for logic symbols that specifies input and output relationships thus fully defining a given function






23. American National Standards Institute






24. 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






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






26. A circuit with a complete current path






27. Characterized by ten states or values






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






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






30. A logic circuit used to add two binary numbers






31. 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.






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






33. The application of a dc voltage to an electronic device to produce a desired mode of operation






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






35. A group of eight bits






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






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






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






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






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






41. Having two opposites charge carriers within the transistor structure






42. 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






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






44. 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






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






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






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






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






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






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







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