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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 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






2. A method for internally testing a PLD based on the JTAG standard (IEEE std.)






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






4. Burst extended data output dynamic random- access memory






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






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






7. A transformer in which the primary and secondary are in a single winding






8. The smallest particle of an element possessing the unique characteristics of that element.






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






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

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






13. 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






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






15. Having two opposites charge carriers within the transistor structure






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






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






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






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






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






21. Dual in - line memory module






22. A connection at the midpoint of a winding in a transformer






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






24. A group of eight bits






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






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






27. In Boolean algebra - the OR operation






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






29. Characterized by ten states or values






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






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






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






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






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






35. Information in numeric - alphabetic - or other form.






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






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






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






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






40. Data Communications equipment






41. An electrical instrument used to measure current






42. 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






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






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






45. 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






46. Dynamic random- access memory; a type of semiconductor memory that uses capacitors as the storage elements and is a volatile - read/write memory






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






48. The graph of a filter's frequency response showing the change in the output voltage to input voltage ratio expressed in dB as a function of frequency for a constant input voltage






49. A device used to convert an analog signal to a sequence of digital codes






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