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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. A nominally continuous electrical signal that varies in amplitude or frequency in response to changes in sound - light - heat - position - or pressure.
Analog
Data
Binary coded decimal
Don't Care...
2. A semiconductor device that conducts current in only one direction
Complement
Diode
Attenuation
DMA
3. A notational system for logic symbols that specifies input and output relationships thus fully defining a given function
Clear
AHDL
Dependency notation
Demultiplexer
4. Characterized by ten states or values
Decade
Don't Care...
ANSI
Circuit Breaker
5. 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
Dynamic Memory
Clear
Bleeder Current
Current sinking
6. A group of eight bits
Dependency notation
Decimal
Byte
Don't Care...
7. The mathematics of logic circuits
Boolean algebra
Angular Velocity
Dynamic Memory
Dual in - line package
8. Sum of all the voltage drops in series equals to the source voltage
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9. A connection at the midpoint of a winding in a transformer
Center Tap
Array
Amplitude
Cache memory
10. Sum of all currents entering a node is equal to the sum of all currents leaving the same node
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11. A digital circuit device that converts coded information into another (familiar) or noncoded form
Amplitude
Decoder
Boolean algebra
Clock
12. In Boolean algebra - the OR operation
Capacitance
Data Selector
Complement
Boolean addition
13. The digit generated when the sum of two binary digits exceeds 1
Carry
ASCII
CMOS
Code
14. In a pulse waveform - the height or maximum value of the pulse as measured from its low level.
Apparent power
Amplitude
Balanced Load
Addend
15. A type of semiconductor memory having capacitive storage cells that lose stored data over a period of time and therefore must be refreshed.
Kirchoff's Current Law(KCL)
Baseline
Alphanumeric
Dynamic Memory
16. A unit of the cross - sectional area of a wire.
Buffer
Augend
Circular Mil (CM)
Branch Current
17. 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
BEDO DRAM
Address
BJT
Balanced Bridge
18. The maximum value of a voltage or current
Decimal
Boolean expression
Code
Amplitude
19. An adverse condition that could occur if two or more devices try to communicate at the same time on a bus
Bus
Bus contention
Bandwidth
Adjacency
20. Arithmetic Logic Unit; the key processing element of a microprocessor that perfoms arithmetic and logic operations.
Cross - assembler
Amplitude
Band- pass filter
ALU
21. Having two opposites charge carriers within the transistor structure
Amplitude
Dependency notation
Carry
Bipolar
22. The total number of data units(bits - nibbles - bytes - words) that a memory can store.
Battery
Boundary scan
Clock
Capacity
23. Direct memory access; a method to directly interface a peripheral device to memory without using the CPU for control
Compiler
Decrement
DMA
Dividend
24. The average of a sine wave over one half- cycle. It is 0.637 times the peak value.
Acceptor
Average value
DTE
Capacitor
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.
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26. A logic circuit used to add two binary numbers
Adder
Control Bus
Baseline
Balanced Bridge
27. A type of magnetic tape format
Array
Digital linear tape
Current sinking
Bidirectional shift Register
28. Having two stable states. Flip- flops and latches are bistable multivibrators.
Kirchoff's Current Law(KCL)
Assembly language
Bistable
Bias
29. An array of AND gates consisting of a matrix of programmable interconnection
CPLD
DSP
AND array
Base address
30. 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.
Circular Mil (CM)
AWG
Array
AHDL
31. The normal level of a pulse waveform; the voltage level in the absence of a pulse.
Boolean expression
Baseline
Branch Current
Admittance
32. The smallest particle of an element possessing the unique characteristics of that element.
Atom
Capacity
Control Bus
Decade
33. Digital Signal Processor; a special type of microprocessor that processes data in real time
DAT
Duty cycle
DSP
Closed circuit
34. Stands for Complementary Metal-Oxide Semiconductor and is implemented with a type of field transistor
Clock
CMOS
Battery
Branch
35. The law that states ORing several variables and then ANDing the single variable with each of the several variables and the ORing the product
DCE
Comparator
Data Sheet
Distributive Law
36. A filter that rejects a range of frequencies lying between two critical frequencies and passes frequencies above and below that range.
Baseline
Circuit
Band- stop filter
Aliasing
37. 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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38. A receiving device on a bus
Cross - assembler
Acceptor
Decade Counter
ANSI
39. A circuit with a complete current path
Address Bus
Dependency notation
Decimal
Closed circuit
40. A combination of logic gates interconnected to produce a specified Boolean function with no storage or memory capability; sometimes called combinatorial logic
Diode
Base
Combinational logic
Bit time
41. Data Terminal equipment
DTE
DCE
AWG
Amplitude
42. To decrease the binary state of a counter by one
Balanced Load
Decrement
Analog- to- digital (A/D) conversion
Angular Velocity
43. Dual in - line memory module
DIMM
Vx=(Vs * Rx) /RT
BEDO DRAM
Bitstream
44. Burst extended data output dynamic random- access memory
Control Bus
Bus arbitration
BEDO DRAM
Baseline
45. 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
Bus contention
Average value
Ampere- hour(Ah) rating
Band- pass filter
46. In addition (ORing) and multiplication (ANDing) of two variables the order in which the variables are ORed or ANDed makes no difference
DIMM
Augend
Commutative Law
Decrement
47. A combined coder and decoder
Code
Don't Care...
Diode
ASCII
48. A type of inductor used to block or choke off high frequencies
Choke
Dependency notation
Branch
Bus interface unit
49. Altera HDL; a nonstandard HDL
Branch
Carry propagation
Circuit
AHDL
50. A type of bistable multivibrator in which the output assumes the state of the D input on the triggering edge of a clock pulse.
Collector
BJT
Architecture
D Flip-Flop