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






2. The unit of electrical current






3. A receiving device on a bus






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






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






6. 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






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






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






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






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






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






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






13. Data Communications equipment






14. 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






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






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






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






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






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






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






21. 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.






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






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






24. A combination of logic gates interconnected to produce a specified Boolean function with no storage or memory capability; sometimes called combinatorial logic






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






26. A complex programmable logic device that consists basically of muliple SPLD arrays with programmable interconnections.






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






28. Direct memory access; a method to directly interface a peripheral device to memory without using the CPU for control






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






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






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






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






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






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






35. The location of a given storage cell or group of cells in a memory; a unique memory location containing on byte






36. American National Standards Institute






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






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






39. Dual in - line memory module






40. Characterized by ten states or values






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






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






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






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






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






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






47. The maximum value of a voltage or current






48. 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






49. Having two opposites charge carriers within the transistor structure






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