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






2. Data Terminal equipment






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






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






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






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






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






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






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






10. Burst extended data output dynamic random- access memory






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






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






13. 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.






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






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






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






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






18. The graph of a filter's frequency response showing the change in the output voltage to input voltage ratio expressed in dB as a function of frequency for a constant input voltage






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






20. A software compiler language for SPLD programming; a type of hardware description language (HDL)






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






22. Describes a number system with a base of ten






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






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






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






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






27. In Boolean algebra - the OR operation






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






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






30. A notational system for logic symbols that specifies input and output relationships thus fully defining a given function






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






32. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






33. In a division operation the quantity that is being divided






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






35. The number of protons in a nucleus






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






37. 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.






38. 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






39. A group of eight bits






40. A semiconductor device that conducts current in only one direction






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






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






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






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






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






46. The ability of a capacitor to store electrical charge.






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






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






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






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