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






2. 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






3. A circuit with a complete current path






4. 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






5. 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






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






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






8. The maximum value of a voltage or current






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






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






11. A relatively small - high- speed memory that stores the most recently used instructions or data from the larger but slower main memory






12. An electrical instrument used to measure current






13. Data Terminal equipment






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






15. 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.


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






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






18. A one- way group of conductors from the to a memory - or other external device - on which the address code is sent






19. A code within DOS that allows various operations on files and includes a primitive assembler; to eliminate a problem in hardware or software.






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






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






22. Having two opposites charge carriers within the transistor structure






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






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






25. Altera HDL; a nonstandard HDL






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






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






28. A type of magnetic tape format






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






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






31. The process of producing an output carry in full- adder when both input bits are 1s.






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






33. Data Communications equipment






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






35. The digit generated when the sum of two binary digits exceeds 1






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






37. Sum of all currents entering a node is equal to the sum of all currents leaving the same node


38. A logic circuit used to add two binary numbers






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






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






41. The process of converting an analog signal to digital form






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






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






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






45. 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






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






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






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






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






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