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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 electrical instrument used to measure current






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






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






4. A combined coder and decoder






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






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






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






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






9. A digital code in which each of the decimal digits - 0 through 9 - is represented by a group of four bits






10. The effect created when a signal is sampled at less than twice the signal frequency. Aliasing creates unwanted frequencies that interfere with the signal frequency.






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






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






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






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






15. Dual in - line memory module






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






17. 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






18. A group of eight bits






19. In addition - the number that is added to another number called the augend






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






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






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






23. Describes a number system with a base of ten






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






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






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






27. The normal level of a pulse waveform; the voltage level in the absence of a pulse.






28. 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.






29. The beginning address of a segment of memory






30. A digital counter having ten states






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






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






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






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






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






36. A theorem that states that any amount of voltage sources and current sources can be combined into a single current source with a parallel resistor.

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






38. 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






39. Basic input/output system; a set of programs in ROM that interfaces the I/) devices in a computer system






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






41. Characterized by ten states or values






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






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






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






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






46. A circuit with a complete current path






47. The phasor combination of resistive power (true power) and reactive power. The unit is the volt- amperes (VA).






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






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






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