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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 circuit that prevents loading of an input or output






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






3. The maximum value of a voltage or current






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






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






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






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






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






9. A type of semiconductor memory that stores data in the form of charge packets and is serially accessed






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






11. A receiving device on a bus






12. 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






13. An instrument that can specify each of the other instruments on the bus as either a talker or a listener for the purpose of data transfer.






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






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






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






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






18. 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






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






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






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






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






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






24. A logic circuit used to add two binary numbers






25. Consisting of numerals - letters - and other characters






26. 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.






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






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






29. 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.






30. 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






31. Data Communications equipment






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






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






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






35. The main part of a computer responsible for control and processing of data; the core of a DSP that processes the program instructions






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. 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






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






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






40. Burst extended data output dynamic random- access memory






41. Having two opposites charge carriers within the transistor structure






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






43. 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






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






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






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






47. 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






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






49. Data Terminal equipment






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