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






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






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






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






5. A interconnection of electrical components designed to produce a desired result. A basic circuits consists of a source - a load and an interconnecting current path.






6. The mathematics of logic circuits






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






8. A digital counter having ten states






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






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






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






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






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






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






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






16. In relation to VHDL feature that permits operations to be processed in a parallel;that is operations that occur simultaneously






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






18. Consisting of numerals - letters - and other characters






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






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






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






22. In a PLD - a matrix formed by rows of product- term lines columns of input lines with a programmable cell at each junctions. In VHDL - an array is an ordered set of individual items called elements with a single identifier name.






23. The actual current in a branch






24. 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






25. The number of protons in a nucleus






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






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






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






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






30. A logic circuit used to add two binary numbers






31. The VHDL unit that describes the internal operation of a logic function; the internal functional arrangement of the elements that give a device its particular operating characteristics.






32. A combined coder and decoder






33. 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.






34. An electrical instrument used to measure current






35. The portion of the CPU that interfaces with the system buses and fetches instructions - reads operands - and writes results.






36. 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






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


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






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






40. Having two opposites charge carriers within the transistor structure






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






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






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






44. A resettable protective device used for interrupting execessive current in an electric circuit






45. The beginning address of a segment of memory






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






47. American National Standards Institute






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






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






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