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






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






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






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






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






6. 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.






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






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






9. The process of rippling an input carry to become the output carry in a full- adder when either or both of the input bits are 1's and the input carry is a 1






10. A digital counter having ten states






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






12. 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






13. A type of magnetic tape format






14. The mathematics of logic circuits






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






16. Bipolar junction transistor; a semiconductor device used for switching or amplification. A BJT has two junctions - the base- emitter junction and the base- collector junction






17. Describes a number system with a base of ten






18. Sum of all the voltage drops in series equals to the source voltage


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






20. Consisting of numerals - letters - and other characters






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






22. The actual current in a branch






23. Data Communications equipment






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






25. A circuit with a complete current path






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






27. A receiving device on a bus






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






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






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






31. An array of AND gates consisting of a matrix of programmable interconnection






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






33. A group of eight bits






34. 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.


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






36. 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.






37. Burst extended data output dynamic random- access memory






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






39. 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.






40. 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






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






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






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






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






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






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






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






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






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






50. 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