Test your basic knowledge |

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






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






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






4. A digital counter having ten states






5. Altera HDL; a nonstandard HDL






6. A number given in ampere- hours determined by multiplying the current times the length of the time (h) a battery can deliver that current to a load






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






8. A digital circuit that compares the magnitudes of two quantiities and produces an output indicating the relationship of the quantities






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






10. 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






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






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






14. 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






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






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






17. The maximum value of a voltage or current






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






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






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






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






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






23. In Boolean algebra - the OR operation






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






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. To decrease the binary state of a counter by one






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






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






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






30. Characteristic of cells in a Karnaugh map in which there is a single- variable change from one cell to another cell next to it on any of its four sides






31. A logic circuit used to add two binary numbers






32. Describes a number system with a base of ten






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






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






35. 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






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






37. Burst extended data output dynamic random- access memory






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






39. 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






40. 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.






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






42. Characterized by ten states or values






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






44. The action of a circuit in which it accepts current into its output from a load






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






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






47. A circuit that prevents loading of an input or output






48. The VHDL unit that describes the internal operation of a logic function; the internal functional arrangement of the elements that give a device its particular operating characteristics.






49. 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






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