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






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






3. 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.






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






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






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






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






8. In Boolean algebra - the AND operation






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






10. Sum of all the voltage drops in series equals to the source voltage


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






12. 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.






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






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






15. Burst extended data output dynamic random- access memory






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






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






18. The ratio of pulse width to period expressed as a percentage






19. A digital counter having ten states






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






21. A receiving device on a bus






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






23. A logic circuit used to add two binary numbers






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






25. The number of protons in a nucleus






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






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






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






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






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






31. A connection at the midpoint of a winding in a transformer






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






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






34. The average of a sine wave over one half- cycle. It is 0.637 times the peak value.






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






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






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






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






39. A type of IC package whose leads must pass through holes to the other side of a PC board






40. An application program in development software packages that controls the design flow process and translates source code into object code in a format that can be logically tested or downloaded to a target device






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






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






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






44. The unit of electrical current






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






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






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






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






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






50. American wire gauge; a standardization based on wire diameter