They are also called, respectively, Polish notation and reverse Polish notation.

The $ 395 HP-35, along with nearly all later HP engineering calculators, used reverse Polish notation ( RPN ), also called postfix notation.

The successor of B3-21, the Elektronika B3-34 wasn't backward compatible with B3-21, even if it kept the reverse Polish notation ( RPN ).

The HP 12c featured the reverse Polish notation mode of data entry.

Calculated Industries competed with the HP 12c in the mortgage and real estate markets by differentiating the key labeling ; changing the “ I ”, “ PV ”, “ FV ” to easier labeling terms such as " Int ", " Term ", " Pmt ", and not using the reverse Polish notation.

For arithmetic operators, this follows the rule of reverse Polish notation.

Forth relies heavily on explicit use of a data stack and reverse Polish notation ( RPN or postfix notation ), commonly used in calculators from Hewlett-Packard.

The language syntax uses reverse Polish notation, which makes the order of operations unambiguous, but reading a program requires some practice, because one has to keep the layout of the stack in mind.

The postfix reverse Polish notation is used in many stack-based programming languages like PostScript and Forth, and is the operating principle of certain calculators, notably from Hewlett-Packard.

The reverse Polish scheme was proposed in 1954 by Burks, Warren, and Wright and was independently reinvented by F. L. Bauer and E. W. Dijkstra in the early 1960s to reduce computer memory access and utilize the stack to evaluate expressions.

A unary operator for which the reverse Polish notation is the general convention is the factorial.

Despite the name, reverse Polish notation is not exactly the reverse of Polish notation, for the operands of non-commutative operations are still written in the conventional order ( e. g. "/ 6 3 " in Polish notation and " 6 3 /" in reverse Polish both evaluating to 2, whereas " 3 6 /" in reverse Polish notation would evaluate to ½ ).

In addition to over, Porter and Duff defined the compositing operators in, held out by ( usually abbreviated out ), atop, and xor ( and the reverse operators rover, rin, rout, and ratop ) from a consideration of choices in blending the colors of two pixels when their coverage is, conceptually, overlaid orthogonally:

Freight lines exist to the south of the station, the closest are used by V / Line to reverse empty trains from Traralgon and Bairnsdale line services, while the ones further south are used by a variety of standard gauge freight operators.

Because International thought people would be skeptical of the reliability of a hydrostatic transmission, they painted a few 123s as tigers and put them in circus acts in which operators would perform tricks on them jamming it in reverse and forward to prove the durability of the new transmission.

In the reverse case, we introduce a minus sign because we have to change the order of two operators:

In addition, operators must be wary of rectification, in which the arc fails to reignite as it passes from straight polarity ( negative electrode ) to reverse polarity ( positive electrode ).

Reverse-billed SMS messages are only sent if specifically requested by the phone user, however some unscrupulous operators will send reverse charged messages without prior consent of the recipient, which often go un-noticed by users on Pay As You Go plans without itemised billing.

The Marina City complex was designed in 1959 by architect Bertrand Goldberg and completed in 1964 at a cost of $ 36 million financed to a large extent by the union of building janitors and elevator operators, who sought to reverse the pattern of white flight from the city's downtown area.

Phoenix Technologies would shortly follow their lead, but soon " clone BIOSes " were available from many other companies who reverse engineered IBM's design, then sold their version to the PC clone manufacturers.

Sometimes the follow steals the lead and they reverse roles for some time.

Hua spearheaded what became known as the Two Whatevers, namely, “ Whatever policy originated from Chairman Mao, we must continue to support ,” and “ Whatever directions were given to us from Chairman Mao, we must continue to follow .” Like Deng, Hua wanted to reverse the damage of the Cultural Revolution ; but unlike Deng, who wanted to propose new economic models for China, Hua intended to move the Chinese economic and political system towards Soviet-style planning of the early 1950s.

An example of such systems are those which follow " Newton's law of cooling " during transient cooling ( or the reverse during heating ).

A statue of Merenptah himself was found — the first known portrait of this king .... Better was to follow: two splendid stelae were found, both of them usurped on the reverse side by Merenptah, who had turned them face to the wall.

The word integration usually means that the composer has written songs that follow the story line gracefully, Well, we accomplished that but we did it in reverse ".

Trains then reverse at Epping's above ground platforms, and follow the opposite route back to Hornsby via City and Macquarie Park.

Some baseball observers feel it might be fairer to reverse this ( in other words, always follow the DH rule of the visiting team instead of the home team ), thereby offsetting the home-field advantage as well as exposing the fans of the home team to the other league's rules.

# That Russia must follow the reverse of guideline number two.

The reverse cascade is a juggling pattern in which the props follow the same path as the cascade, but with time going backwards, hence the ' reverse '.

From there he proceeded to follow the Way of St. James in the reverse direction of the pilgrims ' route, in order to get to Paris overland.

Heels often follow the same principle but in reverse: insulting the city or bringing up something it is infamous for ( such as an under-performing sports team ) to get booed.

Most modern-day pilgrims would wish to follow Sigeric's documented route in the reverse order, i. e. from Canterbury to Rome, and so would journey from Canterbury to the English coast before crossing the Channel to Sumeran ( now called Sombres ) landing at the point where the seaside village of Wissant now lies.

From there, the line could follow the former London and North Western Railway ( LNWR ) line to Manchester ( although through trains would have to reverse ), or extend from Millers Dale on its original route to join the still existing line to on the Hope Valley Line.

In the end, follow the back-pointers from the top card in the last pile to recover a decreasing subsequence of the longest length ; its reverse is an answer to the longest increasing subsequence algorithm.

Also, the level set method makes it very easy to follow shapes that change topology, for example when a shape splits in two, develops holes, or the reverse of these operations.

Up trains from Weymouth would follow the same procedure in reverse: the Class 33 / 1 locomotive would propel its train to Bournemouth ( controlled from the 4TC leading cab ).

Lister then takes off in backwards pursuit of one of the officers, explaining to the others that due to the nature of reverse time he is forced to follow the policeman ( who if time were running forwards would be chasing him ) until he is ' unspotted '.

Trains from Weymouth would follow the same procedure in reverse.

The third US 1 / Route 1A concurrency is in length, including the distance of a median turnaround required to reverse direction on US 1 ; Route 1A north automatically merges onto US 1 north, but to continue to follow Route 1A north, drivers must make a U-turn onto US 1 south.

Sometimes it may even reverse twice in one shot, creating unpredictable shots that follow an S-shaped path.

" Those ISPs that will not or cannot configure reverse DNS will generate problems for hosts on their networks, by virtue of RFCs being contravened when communicating with hosts that do follow the RFC guidelines.

# Would the U. S. Supreme Court have any reason to reverse Massachusetts on such a decision? Answer: no, because nothing in the Constitution requires Massachusetts to follow the same conflicts of law principles as any other state ( especially since the Massachusetts law was statutory ).