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






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






3. 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






4. The actual current in a branch






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






6. An electrical instrument used to measure current






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






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






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






10. A set of interconnections that interface one or more devices based on a standardized specification






11. A two terminal circuit containing voltage sources - current sources - and resistors can be modeled as a voltage source in series with a resistor






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






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






14. Data Terminal equipment






15. 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






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






17. A reduction of the output signal compared to the input signal - resulting in a ratio with a value of less than 1 for the output voltage to the input voltage of a circuit.






18. A circuit with a complete current path






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






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






21. In addition (Oring) and multiplication (ANDing) of three or more variables - the order in which the variables are grouped makes no difference






22. American National Standards Institute






23. 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.






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






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






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






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






28. 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.






29. The beginning address of a segment of memory






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






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






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






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






35. The mathematics of logic circuits






36. 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






37. A digital counter having ten states






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






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






40. A type of magnetic tape format






41. 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.






42. 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






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






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






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






46. 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.






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






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






49. A series of bits describing a final design that is sent to the target device during programming






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