Among his contributions to computer science are the shortest path algorithm, also known as Dijkstra's algorithm ; Reverse Polish Notation and related Shunting yard algorithm ; the THE multiprogramming system, an important early example of structuring a system as a set of layers ; Banker's algorithm ; and the semaphore construct for coordinating multiple processors and programs.

It had an all-transistor design, 13-digit capacity on a CRT, and introduced Reverse Polish notation ( RPN ) to the calculator market at a price of $ 2200.

On the downside, the usage of a data stack and the associated Reverse Polish notation were as unfamiliar as was structured programming.

As is the case with Reverse Polish notation, although R1C1-style formulas are more efficient than A1-style formulae ( for instance, relative and absolute references can be mixed in the same expression, as " R1C " to mean " row 1, this column "), most spreadsheet users prefer the A1 addressing style introduced by VisiCalc.

The term Polish notation is sometimes taken ( as the opposite of infix notation ) to also include Polish postfix notation, or Reverse Polish notation, in which the operator is placed after the operands.

* Reverse Polish notation, a. k. a. Postfix notation, a mathematical notation

Reverse Polish notation ( RPN ) is a mathematical notation wherein every operator follows all of its operands, in contrast to Polish notation, which puts the operator in the prefix position.

A brief analysis of Reverse Polish Notation against Direct Algebraic Logic – By James Redin

vi: Reverse Polish notation

* postfix notation, also called Reverse Polish notation

A brief analysis of Reverse Polish Notation against Direct Algebraic Logic

It uses Reverse Polish Notation, which is a stack-oriented form of calculating.

The HP-48 is a series of graphing calculators using Reverse Polish notation ( RPN ) and the RPL programming language, produced by Hewlett-Packard ( HP ) from 1990 until 2003.

The HP-48 series of calculators support a stack-based programming language named Reverse Polish Lisp ( RPL ), a combination of Reverse Polish Notation ( RPN ) and Lisp.

The HP 49 series of calculators support both algebraic ( HP-Basic ) and a stack-based programming language named RPL ( ROM Procedural Language or Reverse Polish Lisp ), a combination of Reverse Polish Notation ( RPN ) and Lisp.

The HP series of graphing calculators is best known for its Reverse Polish notation interface, although the HP-49 introduced a standard expression entry interface as well.

The instruction set carries out most ALU actions with postfix ( Reverse Polish notation ) operations that work only on the expression stack, not on data registers or main memory cells.

# REDIRECT Reverse Polish notation

The HP-38G, unlike most of HP's other calculators, uses infix notation rather than Reverse Polish notation.

HP calculators are well known for their use of Reverse Polish notation.

Adding to this, some stack-oriented programming languages operate in Reverse Polish or postfix notation-that is, the arguments or parameters for some command are stated before the actual command itself.

* Reverse Polish notation-( RPN ), also known as postfix notation ( 1920 )

* Temporary lending of money for collateral securities (" Reverse Operations " or " repurchase operations ", otherwise known as the " repo " market ).

* Reverse understatements or litotes, such as " not so big " for " short ", " not exactly a supermodel " for " ugly ", or " not true " for " a lie "

It is known as a Reverse Roundhouse Kick because the kicker turns in the opposite, or " reverse ", direction before the kick is executed.

* ( VEW04 ) " Using a Decompiler for Real-World Source Recovery ", M. Van Emmerik and T. Waddington, the Working Conference on Reverse Engineering, Delft, Netherlands, 9 – 12 November 2004.

" to the call " Explode ", the call " Reverse Explode " may elicit the response " Moob!

The ranks in each color are 0 through 9, " Skip ", " Draw Two " and " Reverse ".

Even though Jerry shows Elaine's " Christmas Card " in " The Pick ", he reveals his feelings in " The Soul Mate " until " The Reverse Peephole " in which Elaine tries to get the fur coat but he is already in love with Svetlana.

Reverse Culture Shock ( a. k. a. " Re-entry Shock ", or " own culture shock ") may take place — returning to one's home culture after growing accustomed to a new one can produce the same effects as described above.

In Robert L. Forward's novel Dragon's Egg, it refers to " Reverse Cooper's Droop ", caused by violent sudden deceleration during spaceflight.

of State official history puts it " In this " Reverse Course ," Supreme Commander of the Allied Powers, General Douglas MacArthur, focused on strengthening, not punishing, what would become a key cold war ally ",

The figures are called " changes ", because they allow dancers to change from Natural Turn to Reverse Turn and vice versa.

Reverse circulation is achieved by blowing air down the rods, the differential pressure creating air lift of the water and cuttings up the " inner tube ", which is inside each rod.

Reverse of a Roman denarius of Aulus Plautius from about 55 BCE with inscription " Bacchius Judaeus ", pertaining to Aristobulus II in the Hasmonean era

For the Extra Stage, the song wheel is locked on " MAX 300 ", and the song is played with several forced modifiers, including 1. 5x speed and Reverse.

Reverse Segond fracture, as its name suggests, is caused by abnormal valgus, or " knock-knee ", stress and external rotation.

Wisin & Yandel have collaborated with internationally known artists such as R. Kelly on " Burn It Up ", Paris Hilton on the reggaeton remix to her debut single " Stars Are Blind ", Ja Rule on " Rakata ( Remix )", Lenny Kravitz on " Breathe " ( a promotional song for Absolut Vodka ), Mexican Pop group RBD on " Lento ( Yandel )", compatriots La Secta AllStar on " Llora Mi Corazón ", Fat Joe on " Jangueo ", Nelly Furtado on " Sexy Movimiento ( Remix )", 50 Cent on " Mujeres In The Club ", " No Dejemos Que Se Apague " and " Así Soy " along with G-Unit, Akon on " All Up 2 You " along with Aventura, Enrique Iglesias on " No Me Digas Que No " and " Gracias a Tí ", Gloria Estefan on " No Llores ( Remix )", T-Pain on " Imaginate ", " No Dejemos Que Se Apague ," and in a remix for " Reverse Cowgirl ", and Jennifer Lopez on " Follow the Leader.

The first was a radio receiver, such as the Icom PCR-1000, that could tune into the Reverse Channel, which is the frequency that the phones transmit data to the tower on.

# A poly-T oligonucleotide primer is hybridized onto the poly-A tail of the mature mRNA template, or random hexamer primers can be added which contain every possible 6 base single strand of DNA and can therefore hybridize anywhere on the RNA ( Reverse transcriptase requires this double-stranded segment as a primer to start its operation.

There are six " groups " into which dives are classified: Forward, Back, Inward, Reverse, Twist, and Armstand.

* Reverse Transcriptase, an enzyme used by RNA retroviruses like HIV, which is used to create a complementary strand to the preexisting strand of viral RNA before it can be integrated into the DNA of the host cell.

Reverse transcriptase, a viral enzyme that comes from the virus itself after it is uncoated, converts the viral RNA into a complementary strand of DNA, which is copied to produce a double stranded molecule of viral DNA.

Reverse transcriptases are also found in bacterial Retron msr RNAs, distinct sequences which code for reverse transcriptase, and are used in the synthesis of msDNA.

Reverse transcriptase enzymes include an RNA-dependent DNA polymerase and a DNA-dependent DNA polymerase, which work together to perform transcription.

It has been speculated that this template switching activity of Reverse Transcriptase, which can be demonstrated completely in vivo, may have been one of the causes for finding several thousand unannotated transcripts in the genomes of model organisms.

Reverse transcription is catalyzed by a reverse transcriptase, which is often coded by the TE itself.

He has pioneered or popularised the use of many techniques in computer graphics, including " adaptive tile refresh " for Commander Keen, raycasting for Hovertank 3-D, Catacomb 3-D, and Wolfenstein 3-D, binary space partitioning which Doom became the first game to use, surface caching which he invented for Quake, Carmack's Reverse ( formally known as z-fail stencil shadows ) which he devised for Doom 3, and MegaTexture technology, first used in Enemy Territory: Quake Wars.

Reverse electron transitions for all these types of excited molecules are also possible to return to their ground states, which can be designated as σ *→ σ, π *→ π, or π *→ n.

Reverse ARP differs from the Inverse Address Resolution Protocol ( InARP ) described in RFC 2390, which is designed to obtain the IP address associated with a local Frame Relay data link connection identifier.

* Reverse auction is a type of auction in which the roles of the buyer and the seller are reversed, with the primary objective to drive purchase prices downward.

* Reverse proxy which discusses origin-side proxies

Reverse speech is a pseudoscience first advocated by David John Oates which gained publicity when it was mentioned on Art Bell's nightly Coast to Coast AM radio talk show.

Reverse osmosis plant membrane systems typically use less energy than thermal distillation, which has led to a reduction in overall desalination costs over the past decade.

* Reverse proxy which discusses origin-side proxies

* Reverse proxy which discusses origin-side proxies

Reverse transcription PCR is not to be confused with real-time polymerase chain reaction ( Q-PCR / qRT-PCR ), which is also sometimes abbreviated as RT-PCR.

The launch show, which was live and an hour long, was notable for a performance of " Flip Reverse " by Blazin ' Squad, featuring hordes of hooded teenagers choreographed to dance around the outside of BBC Television Centre.