* Scanning: If a is the next symbol in the input stream, for every state in S ( k ) of the form ( X → α • a β, j ), add ( X → α a • β, j ) to S ( k + 1 ).

An LL parser has to decide or guess what it is seeing much sooner, when it has only seen the leftmost input symbol of that pattern.

* A Shift step advances in the input stream by one symbol.

Pushdown automata choose a transition by indexing a table by input signal, current state, and the symbol at the top of the stack.

Put together: Given an input signal, current state, and stack symbol, the automaton can follow a transition to another state, and optionally manipulate ( push or pop ) the stack.

Nondeterminism means that there may be more than just one transition available to follow, given an input signal, state, and stack symbol.

It has the intended meaning that, in state, with on the input and with as topmost stack symbol, may read, change the state to, pop, replacing it by pushing.

Any 3-tuple is called an instantaneous description ( ID ) of, which includes the current state, the part of the input tape that has not been read, and the contents of the stack ( topmost symbol written first ).

The computation starts in the initial state with the initial stack symbol on the stack, and a string on the input tape, thus with initial description.

Where the grammar generates a terminal symbol, the PDA reads a symbol from input when it is the topmost symbol on the stack ( match ).

The schematic symbol for a multiplexer is an isosceles trapezoid with the longer parallel side containing the input pins and the short parallel side containing the output pin.

One of the main types of entropy coding creates and assigns a unique prefix-free code to each unique symbol that occurs in the input.

These entropy encoders then compress data by replacing each fixed-length input symbol by the corresponding variable-length prefix-free output codeword.

According to Shannon's source coding theorem, the optimal code length for a symbol is − log < sub > b </ sub > P, where b is the number of symbols used to make output codes and P is the probability of the input symbol.

The parser applies the rule found in the table by matching the top-most symbol on the stack ( row ) with the current symbol in the input stream ( column ).

where '$' is a special terminal to indicate the bottom of the stack and the end of the input stream, and ' S ' is the start symbol of the grammar.

# Add W followed by the next symbol in the input to the dictionary.

As the automaton sees a symbol of input, it makes a transition ( or jump ) to another state, according to its transition function ( which takes the current state and the recent symbol as its inputs ).

In this case after reading each symbol, the automaton reads all the successor symbols in the input tree.

In the years following the Revolution the poetic device " Columbia " was used as a symbol of both Columbus and America, King's College of New York changed its name in 1792 to Columbia, and the new capitol in Washington was subtitled District of Columbia.

* In a diode, it is the positive terminal at the tail of the arrow symbol ( base of the triangle ), where current flows into the device.

The flow of electrons is always from anode to cathode outside of the cell or device, regardless of the cell or device type and operating mode, with the exception of diodes, where electrode naming always assumes current in the forward direction ( that of the arrow symbol ), i. e., electrons flow in the opposite direction, even when the diode reverse-conducts either by accident ( breakdown of a normal diode ) or by design ( breakdown of a Zener diode, photo-current of a photodiode or solar cell ).

* In a diode, it is the negative terminal at the pointed end of the arrow symbol, where current flows out of the device.

When a new symbol has been entered, the device typically sends an interrupt to alert the CPU to read it.

A flag is usually a piece of fabric with a distinctive design that is usually rectangular and used as a symbol, as a signaling device, or decoration.

Because a preorder is a binary relation, the symbol ≤ can be used as the notational device for the relation.

Officially, the style of the symbol should show the component inside a circle ( representing the envelope of a discrete device ).

ANSI and International Electrotechnical Commission | IEC standard electronic symbol | schematic symbol for a circulator ( with each waveguide or transmission line port drawn as a single line, rather than as a pair of conductors ) A circulator is a passive non-reciprocal three-or four-port device, in which a microwave or radio frequency signal entering any port is transmitted to the next port in rotation ( only ).

A mnemonic device for the NPN transistor symbol is not pointing in, based on the arrows in the symbol and the letters in the name.

A mnemonic device for the PNP transistor symbol is pointing in ( proudly / permanently ), based on the arrows in the symbol and the letters in the name.

The device is best known for its use in France, in particular during the French Revolution, when it " became a part of popular culture, celebrated as the people's avenger by supporters of the Revolution and vilified as the pre-eminent symbol of the Reign of Terror by opponents.

:" Any person who, on or in connection with any goods or services, or any container for goods, uses in commerce any word, term, name, symbol, or device, or any combination thereof, or any false designation of origin, false or misleading description of fact, or false or misleading representation of fact, which

Wollaston became wealthy by developing the first physico-chemical method for processing platinum ore in practical quantities, and in the process of testing the device he discovered the elements palladium ( symbol Pd ) in 1803 and rhodium ( symbol Rh ) in 1803.

Following popularity among noblemen, this new device for smoking soon became a status symbol for the Indian aristocracy and gentry.

The fastening device was chosen as a symbol for the community's seafaring history.

A modulator is generally a much simpler device than a demodulator, because it doesn't have to recover symbol and carrier frequencies.

In mythology and literature, a quest, a journey towards a goal, serves as a plot device and ( frequently ) as a symbol.

A man approached them wearing a black executioner's-type hood with clip-on sunglasses over the eye-holes and a bib-like device on his chest that had a white 3 " x3 " cross-circle symbol on it.

An abjad is a type of writing system where each symbol always or usually stands for a consonant, leaving the reader to supply the appropriate vowel.

These states are labeled by a set of quantum numbers summarized in the term symbol and usually associated with particular electron configurations, i. e., by occupation schemes of atomic orbitals ( e. g., 1s < sup > 2 </ sup > 2s < sup > 2 </ sup > 2p < sup > 6 </ sup > for the ground state of neon -- term symbol: < sup > 1 </ sup > S < sub > 0 </ sub >).

The term anthem means either a specific form of Anglican church music ( in music theory and religious contexts ), or more generally, a song ( or composition ) of celebration, usually acting as a symbol for a distinct group of people, as in the term " national anthem " or " sports anthem ".

Moreover ( and more embarrassingly, although this is essentially trivial ), mathematicians usually write the dual entity not at the first place, as the physicists do, but at the second one, and they don't use the *- symbol, but an overline ( which the physicists reserve to averages ) to denote conjugate-complex numbers, i. e. for scalar products mathematicians usually write

A formal grammar defines ( or generates ) a formal language, which is a ( usually infinite ) set of finite-length sequences of symbols ( i. e. strings ) that may be constructed by applying production rules to another sequence of symbols which initially contains just the start symbol.

Nonterminals are usually represented by uppercase letters, terminals by lowercase letters, and the start symbol by.

Two manifolds M and N are diffeomorphic ( symbol usually being ) if there is a smooth bijective map f from M to N with a smooth inverse.

The amount of charge is usually given the symbol Q and expressed in coulombs ; each electron carries the same charge of approximately − 1. 6022 × 10 < small >< sup >− 19 </ sup ></ small > coulomb.

An estimator of is usually denoted by the symbol.

Prototypical retroflexes are subapical and palatal, but they are usually written with the same symbol as the apical postalveolars.

Before long, a falcon representing Horus became the norm as the animal on top, with the individual Pharaoh's symbol usually appearing in the box beneath the falcon, and above the stripes representing the palace.

A key measure of information is known as entropy, which is usually expressed by the average number of bits needed to store or communicate one symbol in a message.

This capacity has the following property related to communicating at information rate R ( where R is usually bits per symbol ).

More broadly the term is used in a wide number of contexts for an image, picture, or representation ; it is a sign or likeness that stands for an object by signifying or representing it either concretely or by analogy, as in semiotics ; by extension, icon is also used, particularly in modern culture, in the general sense of symbol — i. e. a name, face, picture, edifice or even a person readily recognized as having some well-known significance or embodying certain qualities: one thing, an image or depiction, that represents something else of greater significance through literal or figurative meaning, usually associated with religious, cultural, political, or economic standing.

From then on all Byzantine coins had a religious image or symbol on the reverse, usually an image of Christ for larger denominations, with the head of the Emperor on the obverse, reinforcing the bond of the state and the divine order.

As a rule of thumb, if a character or symbol was not already part of a widely used data-processing character set and was also not usually provided on typewriter keyboards for a national language, it didn't get in.

Lyrics are usually displayed on a video screen, along with a moving symbol, changing color, or music video images, to guide the singer.

Neither the name of a physical quantity, nor the symbol used to denote it, implies a particular choice of unit, though SI units are usually preferred and assumed today due to their ease of use and all-round applicability.

In physics, a photon is usually denoted by the symbol γ ( the Greek letter gamma ).

The harlequin, a comedic character usually depicted in checkered patterned clothing, became a personal symbol for Picasso.