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Test your basic knowledge |
Digital Fundamentals
Start Test
Study First
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. Having two stable states. Flip- flops and latches are bistable multivibrators.
Closed circuit
Asynchronous counter
Bistable
Byte
2. A combined coder and decoder
Carry generation
Code
Controller
Component
3. Dynamic random- access memory; a type of semiconductor memory that uses capacitors as the storage elements and is a volatile - read/write memory
Concurrency
Cascade
DRAM
Bus arbitration
4. A digital code in which each of the decimal digits - 0 through 9 - is represented by a group of four bits
Choke
Digital linear tape
Binary coded decimal
Branch Current
5. 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
Bus
Ampere
Digital linear tape
Clock
6. A condition where all the load currents are equal and the neutral current is zero
Controller
Astable
Digital linear tape
Balanced Load
7. An adverse condition that could occur if two or more devices try to communicate at the same time on a bus
Bus contention
CLB (Configurable Logic Block)
Central processing unit
Asynchronous counter
8. A document that specifies parameter values and operating conditions for an integrated circuits or other device
Decade Counter
Ampere
ABEL(Advance Boolean Expression Language)
Data Sheet
9. The time from the application of a valid memory address to the appearance of valid output data
Analog- to- digital (A/D) conversion
Access time
Circular Mil (CM)
Binary
10. A measure of the ability of a reactive circuit to permit current; the reciprocal of impedance. the unit is the siemens
Clock
Admittance
Byte
Bitstream
11. Burst extended data output dynamic random- access memory
Bandwidth
BEDO DRAM
Antifuse
DTE
12. A digital circuit capable of counting electronic events - such as pulses - by progressing through a sequence of binary states.
Counter
Boolean algebra
Decrement
Angular Velocity
13. The process that prevents two sources from using a bus at the same time
Bus arbitration
Complement
Augend
BJT
14. 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.
Astable
Control Unit
Vx=(Vs * Rx) /RT
Ammeter
15. A complex programmable logic device that consists basically of muliple SPLD arrays with programmable interconnections.
Amplitude
CPLD
Bidirectional shift Register
Circuit Breaker
16. 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
Center Tap
Carry propagation
Commutative Law
Norton's Theorem
17. Having no stable state. An astable multivibrator oscillates between two quasi- stable states.
Dividend
Concurrency
Associative law
Astable
18. A method for internally testing a PLD based on the JTAG standard (IEEE std.)
Bandwidth
Boundary scan
Complement
CPLD
19. A digital circuit device that converts coded information into another (familiar) or noncoded form
Delta Modulation
Dependency notation
Decoder
Autotransformer
20. Having two directions. the stored data can be shifted right or left
Buffer
DAT
Decoder
Bidirectional shift Register
21. A type of PLD nonvolatile programmable link that can be left open or can be shorted once as directed by the program
Antifuse
Bipolar
Norton's Theorem
Clear
22. A bridge circuit that is in the balanced state as indicated by 0 V across the output.
Balanced Bridge
Associative law
Base address
Carry generation
23. Direct memory access; a method to directly interface a peripheral device to memory without using the CPU for control
bed- of- nails
AND
Center Tap
DMA
24. A unit of the cross - sectional area of a wire.
Array
Circular Mil (CM)
Decimal
Comparator
25. 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.
26. The smallest particle of an element possessing the unique characteristics of that element.
Code
Charge- coupled device
Atom
Dual in - line package
27. Consisting of numerals - letters - and other characters
Alphanumeric
Decade Counter
Dependency notation
Duty cycle
28. A two terminal circuit containing voltage sources - current sources - and resistors can be modeled as a voltage source in series with a resistor
Circular Mil (CM)
Carry propagation
Assembly language
Thevenin Equivalent Circuit
29. 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.
BEDO DRAM
Kirchoff's Current Law(KCL)
Bus arbitration
Data Selector
30. The action of a circuit in which it accepts current into its output from a load
Base
Current sinking
Autotransformer
Adjacency
31. A type of IC package whose leads must pass through holes to the other side of a PC board
Decimal
Dual in - line package
Boolean addition
Assembly language
32. Digital Signal Processor; a special type of microprocessor that processes data in real time
DSP
Circular Mil (CM)
Boolean multiplication
Acceptor
33. The law that states ORing several variables and then ANDing the single variable with each of the several variables and the ORing the product
Capacitance Reactance
Aliasing
Ampere
Distributive Law
34. A programming language that uses English like words and has a one- to- one correspondence to machine language
Counter
Boolean expression
Ammeter
Assembly language
35. A class of integrated logic circuits that is implemented with a type of field effect transistor
Asynchronous counter
DCE
Ammeter
CMOS Complementary Metal Oxide Semiconductor
36. A logic circuit used to add two binary numbers
Control Unit
Balanced Load
Dual in - line package
Adder
37. 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
Base address
Access time
Complement
Band- pass filter
38. One of the three regions in a bipolar junction transistor
Kirchoff's Current Law(KCL)
Assembly language
Binary coded decimal
Base
39. The main part of a computer responsible for control and processing of data; the core of a DSP that processes the program instructions
CLB (Configurable Logic Block)
Carry propagation
Compiler
Central processing unit
40. Transistor-Transistor Logic and is implemented with bipolar junction transistors
Choke
Dividend
TTL
Carry propagation
41. A receiving device on a bus
Kirchoff's Voltage Law
Balanced Bridge
Acceptor
Amplitude
42. A method for the automated testing of printed circuit boards in which the board is mounted on a fixture that resembles a bed of nails that makes contact with test points
Digital linear tape
Branch
Center Tap
bed- of- nails
43. A nominally continuous electrical signal that varies in amplitude or frequency in response to changes in sound - light - heat - position - or pressure.
Compiler
Analog
Dependency notation
Atomic number
44. A semiconductor device that conducts current in only one direction
DAT
Branch Current
Capacitor
Diode
45. A circuit with a complete current path
Closed circuit
Decimal
Circuit Breaker
Current sinking
46. The normal level of a pulse waveform; the voltage level in the absence of a pulse.
AND array
Associative law
Baseline
Don't Care...
47. 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.
Attenuation
Decrement
Architecture
Thevenin Equivalent Circuit
48. 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
Kirchoff's Current Law(KCL)
DIMM
Astable
BJT
49. A combination of input literals that cannot occur and can be used as a 1 or 0 on a Karnaugh Map for simplification
50. In Boolean algebra - the AND operation
Ampere
Closed circuit
Binary coded decimal
Boolean multiplication