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






2. A type of magnetic tape format






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






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






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






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






7. American National Standards Institute






8. 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






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






10. A combined coder and decoder






11. A binary digit - which can be either 1 or 0






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






13. Altera HDL; a nonstandard HDL






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






15. Stands for Complementary Metal-Oxide Semiconductor and is implemented with a type of field transistor






16. 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






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






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






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






20. Data Communications equipment






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






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






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






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






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






27. In a PLD - a matrix formed by rows of product- term lines columns of input lines with a programmable cell at each junctions. In VHDL - an array is an ordered set of individual items called elements with a single identifier name.






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

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29. An electrical device consisting of two conductive plates separated by an insulating material and possessing the property of capacitance.






30. 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.






31. 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






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






33. 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.






34. Sum of all currents entering a node is equal to the sum of all currents leaving the same node

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






36. Characterized by ten states or values






37. Having two opposites charge carriers within the transistor structure






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






39. In Boolean algebra - the AND operation






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






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






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






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






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






45. Describes a number system with a base of ten






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






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






48. Having two directions. the stored data can be shifted right or left






49. 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






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