Digital Electronics EOC

Ace your homework & exams now with Quizwiz!

Printed circuit board

A circuit board in which connections between components are made with lines of copper on the surfaces of the circuit board

Prototype

A circuit built functionally the same as a circuit that is to be tested

Multiplexer

A circuit that directs one of several digital signals to a single output, depending on the states of several select inputs

Encoder

A circuit that generates a binary code at its outputs in response to one or more active input lines

BCD-to-seven-segment decoder

A circuit with a 4-bit input for a BCD digit and seven outputs for segment selection

Boolean inputs

A combinational logic circuit is one in which two or more gates are connected together to combine several _______

Breadboard

A device with hidden interconnections on which we can build a prototype circuit

Timing diagram

A diagram showing how two or more digital waveforms in a system relate to each other over time

Octect

A group of eight adjacent cells

12 to 100

A medium-scale integration is an integrated circuit having the equivalent of ______ gates in one package

Solder

A metal alloy that melts at a significantly lower temperature than the metals it connects

Proton

A positively charged particle found in the nucleus of the atom

Clock signal

A special case of a symmetrical periodic waveform

50 mA

Currents as low as this may possibly result in death

Inputs

Decoder circuits often are constructed with multiple outputs; in effect, such a device is a collection of decoding gates controlled by the same _______

Demultiplexer

Directs a single input signal to one of several outputs

Voltage

Electrical potential

0 to 15

For the binary numbers from 0000 to 1111, the decimal equivalents are _____

Active LOW

Shown by a bubble or an arrow symbol on the affected terminal

Ohm's Law

States that the voltage across a component is equal to the resistance of the component multiplied by the current through the component

7

The International System of Units has _____ base units

Digital signals

Varies between two discrete values in much the same way that a light switch has two levels, "off" and "on."

Order of precedence

Boolean functions are governed by _______

Logic gates

Can be used as electronic switches to block or allow passage of digital waveforms

Ohm

Unit of resistance

Maxterm

A sum term in a Boolean expression where all possible variables appear once, in true or complement form

Negative logic

A system in which logic LOW represents binary digit 1 and logic HIGH represents binary digit 0

Periodic waveform

A time-varying sequence of logic HIGHs and LOWs that repeats over a specified period of time

Decoder

Activates one or more outputs when a specific set of values is applied to the circuit's inputs

Hexadecimal

After the binary system, ______ numbers are the most often used in digital applications

Even parity

An error-checking system that requires a binary number to have an even number of 1s

Positive Logic

Assigning the digit 1 to a logic HIGH and digit 0 to logic LOW

Noble elements

It is very difficult for _____ to combine to form molecules

Node

Junction of electronic components

Truth table

List of all possible input values to a digital circuit, listed in ascending binary order, and the output response for each input combination

Atom

Made up of a nucleus surrounded by orbiting electrons

Data inputs

Multiplexer inputs that feed a digital signal to the output when selected

Sum-of-Products

One way to simplify a _______ is to look for pairs of product terms that are different by just one variable, then factor out what is common to the term, as you would do in other types of algebra

Not polarized

Resistors are _____; in other words, they can go into a circuit in either direction

Insulator

Rubber is an example of this

Soldering

This is done to attach components like resistors and capacitors to circuit boards

Polarized

These components must be inserted into a circuit in the proper direction to function

Protons

The atomic number of an element is the number of _____ in the nucleus of an atom of that element

Current

The flow of electricity

Duty cycle

The fraction of the total period that a digital waveform is in the HIGH state

0 to 3

The input to a circuit has values from _______ coded in binary format

Voltage

The more it is applied to a person's body, the more current will flow, and the more dangerous the situation becomes

Resistors

The most common component in electronics

VCC pin

The only place a chip gets its required power

Synthesis

The process of creating a logic circuit from a description such as a Boolean equation or truth table

Static electricity

The result of a stored charge rapidly discharging

Least significant bit

The rightmost bit of a binary number

Seven-Segment Decoder

The ripple blanking feature often included in a _______ allows for suppression of leading or trailing zeros in a multiple digit display, while allowing zeros to be displayed in the middle of a number

Meter

The typical issue when measuring current is that the _____ must receive the exact same current as the resistor to be measured

Simulation

The verification, using timing diagrams, of the logic of a digital design before programming it into a CPLD or an FPGA

NAND

This gate combines all of its inputs in an AND function, then inverts the total result

Boolean equation

Ultimately, you are looking for this when designing a combinational logic circuit

Complement form

When inverting gates such as NAND and NOR are enabled, they will invert an input signal passing it to the gate output; in other words, they transmit the signal in _______

Logic gate network

When two or more gates are connected together they form a _______

Flux

Wire solder contains solder and _____

Resistors

_____ are typically found as axial-lead packages

Seven-Segment Display

an array of seven independently controlled light-emitting diode (LED) or liquid crystal display (LCD) elements, shaped like a figure-8, which can be used to display decimal digits and other characters by turning on the appropriate elements


Related study sets

Orange County Sheriff's Department | PHONETIC ALPHABET

View Set

Electricity and Electronics Exam #1

View Set

unit 1 : communicating with other / english 10 post test

View Set

POSC 2306 Texas State & Local Government Exam #2 Chapters 7,8,9 Thursday March 3,2020

View Set

Environmental Politics of the USA

View Set