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






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






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






4. Having two opposites charge carriers within the transistor structure






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






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






7. The basic timing signal in a digital system; a periodic waveform in which the interval between pulses equals the time for one bit; the triggering input of a flip- flop






8. 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






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






10. Data Terminal equipment






11. A logic circuit used to add two binary numbers






12. 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






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






14. 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






15. The number of protons in a nucleus






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






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






18. An adverse condition that could occur if two or more devices try to communicate at the same time on a bus






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






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






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






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






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






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






25. Consisting of numerals - letters - and other characters






26. A receiving device on a bus






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






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






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






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






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






32. 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






33. Burst extended data output dynamic random- access memory






34. A combined coder and decoder






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






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






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






38. 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






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






40. In a pulse waveform - the height or maximum value of the pulse as measured from its low level.






41. 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






42. 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.






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






44. In Boolean algebra - the AND operation






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






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






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






48. To decrease the binary state of a counter by one






49. Altera HDL; a nonstandard HDL






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