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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. Stands for Complementary Metal-Oxide Semiconductor and is implemented with a type of field transistor
DCE
Delta Modulation
CMOS
Bode Plot
2. A filter that rejects a range of frequencies lying between two critical frequencies and passes frequencies above and below that range.
Bus
Carry generation
Band- stop filter
Associative law
3. 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
Control Bus
D Flip-Flop
Data Selector
Data bus
4. Data Communications equipment
Design flow
Angular Velocity
DCE
Norton's Theorem
5. 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.
Combinational logic
Bleeder Current
Attenuation
Boolean multiplication
6. A device used to convert an analog signal to a sequence of digital codes
Analog- to- digital converter(ADC)
Bus interface unit
Balanced Load
Binary
7. 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.
Ammeter
Capacity
Data Selector
Digital linear tape
8. The law that states ORing several variables and then ANDing the single variable with each of the several variables and the ORing the product
Bipolar
Distributive Law
Capacitance
Decade
9. A method for internally testing a PLD based on the JTAG standard (IEEE std.)
Counter
Charge- coupled device
Balanced Bridge
Boundary scan
10. In Boolean algebra - the AND operation
Boolean multiplication
Ampere
Amplitude
DCE
11. A type of counter in which each stage is clocked from the output of the preceding stage.
Component
Asynchronous counter
Data
Decimal
12. 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
Base
Control Bus
Component
Capacitance Reactance
13. A digital circuit device that converts coded information into another (familiar) or noncoded form
Base address
AHDL
Boolean expression
Decoder
14. One current path in a parallel circuit; a current path that connects two nodes
Boolean multiplication
Current sinking
Bus interface unit
Branch
15. An adverse condition that could occur if two or more devices try to communicate at the same time on a bus
DRAM
Boundary scan
Bus contention
Center Tap
16. An expression of variables and operators used to express the operation of a logic circuit
Boolean expression
Duty cycle
BEDO DRAM
Carry generation
17. 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
Boolean multiplication
Byte
Compiler
Comparator
18. An array of AND gates consisting of a matrix of programmable interconnection
Angular Velocity
Battery
AND array
Diode
19. 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
DIMM
ABEL(Advance Boolean Expression Language)
Clock
DMA
20. A combination of input literals that cannot occur and can be used as a 1 or 0 on a Karnaugh Map for simplification
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21. A circuit that prevents loading of an input or output
Buffer
Circuit
Boolean expression
DSP
22. Having no stable state. An astable multivibrator oscillates between two quasi- stable states.
Digital linear tape
Charge
Astable
Carry propagation
23. The mathematics of logic circuits
Base
Boolean algebra
BJT
DTE
24. A circuit (digital service) that switches digital data from one input line to several output lines in a specified time sequence
Dual in - line package
Demultiplexer
Counter
Associative law
25. Sum of all the voltage drops in series equals to the source voltage
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26. Transistor-Transistor Logic and is implemented with bipolar junction transistors
Analog- to- digital converter(ADC)
TTL
Ammeter
CPLD
27. The unit of electrical current
Kirchoff's Current Law(KCL)
Balanced Load
Base
Ampere
28. 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
Ampere- hour(Ah) rating
Boolean expression
Demultiplexer
Decoder
29. Dynamic random- access memory; a type of semiconductor memory that uses capacitors as the storage elements and is a volatile - read/write memory
DRAM
DMA
Balanced Load
AND
30. In relation to VHDL feature that permits operations to be processed in a parallel;that is operations that occur simultaneously
BIOS
Cache memory
Carry
Concurrency
31. 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
BJT
AND gate
Dual in - line package
Boolean addition
32. An electrical instrument used to measure current
Ammeter
Base
Acceptor
Average value
33. 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.
Cache memory
Aliasing
Atom
Branch Current
34. 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
Bus interface unit
Dual in - line package
Demultiplexer
Bode Plot
35. The digit generated when the sum of two binary digits exceeds 1
Code
Carry
BJT
Bitstream
36. A document that specifies parameter values and operating conditions for an integrated circuits or other device
Astable
Data Sheet
Admittance
Choke
37. A type of inductor used to block or choke off high frequencies
Choke
Control Unit
Bus contention
Boolean algebra
38. Digital audio tape; a type of magnetic tape format
Circuit Breaker
DAT
Duty cycle
Bias
39. A VHDL feature that can be used to predefine the logic function for multiple use throughout a program or programs
Amplitude
Component
Choke
Capacity
40. A condition where all the load currents are equal and the neutral current is zero
Control Unit
Balanced Load
TTL
Amplitude
41. 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.
Control Unit
Angular Velocity
Data Selector
DRAM
42. 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
Bistable
Boundary scan
Adjacency
Astable
43. A method of analog- to- digital conversion using a 1- bit quantization process
Architecture
Atom
Delta Modulation
Analog- to- digital (A/D) conversion
44. 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.
Access time
Control Unit
Combinational logic
Circuit
45. A binary digit - which can be either 1 or 0
Decade Counter
Kirchoff's Voltage Law
Bit time
Bit
46. A two terminal circuit containing voltage sources - current sources - and resistors can be modeled as a voltage source in series with a resistor
Bleeder Current
Address Bus
Complement
Thevenin Equivalent Circuit
47. The action of a circuit in which it accepts current into its output from a load
Diode
Vx=(Vs * Rx) /RT
Current sinking
Combinational logic
48. A type of semiconductor memory that stores data in the form of charge packets and is serially accessed
Average value
Combinational logic
Bit
Charge- coupled device
49. An energy source that uses a chemical reaction to convert chemical energy into electrical energy.
Battery
Bleeder Current
Kirchoff's Voltage Law
Binary
50. A measure of the ability of a reactive circuit to permit current; the reciprocal of impedance. the unit is the siemens
Band- stop filter
CMOS
Admittance
Binary