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. A circuit with a complete current path






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






3. A group of eight bits






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






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






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






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






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






9. 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






10. Describes a number system with a base of ten






11. The beginning address of a segment of memory






12. A class of integrated logic circuits that is implemented with a type of field effect transistor






13. The current left after the total load current is subtracted from the total current into the circuit






14. Having two opposites charge carriers within the transistor structure






15. The number of protons in a nucleus






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






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






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






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






20. 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






21. 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






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






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






24. An electrical device consisting of two conductive plates separated by an insulating material and possessing the property of capacitance.






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






26. 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.






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






28. One of the three regions in a bipolar Junction transistor(North junction of NpN)






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






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






31. 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






32. 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






33. A digital circuit device that converts coded information into another (familiar) or noncoded form






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






35. Data Terminal equipment






36. A type of counter in which each stage is clocked from the output of the preceding stage.






37. 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






38. One current path in a parallel circuit; a current path that connects two nodes






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






40. A set of interconnections that interface one or more devices based on a standardized specification






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






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






43. 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






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






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






46. 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






47. Transistor-Transistor Logic and is implemented with bipolar junction transistors






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






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






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