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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. An instrument that can specify each of the other instruments on the bus as either a talker or a listener for the purpose of data transfer.






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






3. Dual in - line memory module






4. An electrical instrument used to measure current






5. A combined coder and decoder






6. Characterized by ten states or values






7. 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






8. 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






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






10. Having two directions. the stored data can be shifted right or left






11. 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.


12. Dynamic random- access memory; a type of semiconductor memory that uses capacitors as the storage elements and is a volatile - read/write memory






13. 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.






14. A bidirectional set of conductive paths on which data or instruction codes are transferred into a microprocessor or on which the result of an operation is sent out from the microprocessor






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






16. The process that prevents two sources from using a bus at the same time






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






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






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






20. Having two opposites charge carriers within the transistor structure






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






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






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






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






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






26. 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






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






28. A group of eight bits






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






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






31. A reduction of the output signal compared to the input signal - resulting in a ratio with a value of less than 1 for the output voltage to the input voltage of a circuit.






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






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






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






35. In Boolean algebra - the AND operation






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






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






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






39. Consisting of numerals - letters - and other characters






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






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






42. 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






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






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






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






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






47. The action of a circuit in which it accepts current into its output from a load






48. The unit of electrical current






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






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