PAL

The PAL system is a method of color coding in television broadcasting. Its full name is Phase Alternating Line. It is a color television broadcast standard specified by West Germany in 1962. It adopts the technical method of progressive phase inversion quadrature balanced amplitude modulation, which overcomes the shortcomings of color distortion caused by the phase sensitivity of the NTSC system. Some Western European countries such as West Germany and the United Kingdom, Singapore, mainland China and Hong Kong, Australia, New Zealand and other countries adopt this system. PAL was proposed by German Walter Bruch in 1967, when he was working for Telefunken. "PAL" is sometimes used to refer to the 625-line, 25 frames per second, interlaced, PAL color-coded television system. The PAL system can be further divided into G, I, D and other systems according to different parameter details, among which the PAL-D system is the system adopted in mainland my country.

------------- Interpretation 2 ------------------

pal, Taiwan Daewoo Information company's PC game "Legend of Sword and Fairy" in English.

Tips: The origin of PAL

"Legend of Sword and Fairy" originally had no English name. When Lin Kunxin wrote the music to Yao Zhuangxian, the directory he used was named PAL, which means paladin (paladin: < /p>

The abbreviation of knight, ranger, (an outstanding advocate of a cause) has been used to this day.

Note: Xie Chonghui, Lin Kunxin, and Yao Zhuangxian are the main creative staff of "Legend of Sword and Fairy DOS Version". Among them, Lin Kunxin is responsible for the game's soundtrack, and he wrote all the classic music in Sword and Sword Generation.

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PAL Warcraft 3 Mid-Human Hero: The abbreviation of Paladin

Introduction: Archbishop Alonsos Faol established the Knights of the Silver Hand during the Second War. These holy knights - often called paladins - lead the war against the evil orcs and ensure that Lordaeron does not fall into ruins. Although the Second War has ended nearly 15 years ago, the Paladins still make selfless sacrifices to protect humanity that is constantly being eroded by evil. Guided by the power of light, they used warhammers and sacred fire as weapons to fight against all enemies who killed innocent people.

Has

Holy Light:

Holy Light can heal our injured units or damage undead units (quick cut key "T").

Devotion Aura:

Increases the armor value of surrounding allies.

Divine Shield:

The Paladin can shroud himself in an impenetrable barrier of light, making him immune to all physical and magical damage.

Resurrection (Ultimate Magic):

Let up to 6 dead units return to the battlefield. When there are more than 6 dead units, they will be within range. The 6 most powerful units are resurrected (shortcut "R").

Skills such as

ASM

(Acceleration Simulation Mode, abbreviated as ASM)

We are enjoying the convenience brought by the booming development of the automobile industry At the same time, it is also deeply affected. A large amount of vehicle exhaust has caused environmental pollution in the city.

The main emissions of HC, CO and NOx will form photochemical fog, seriously endangering the life and property safety of urban residents

. The traditional idling method for detecting vehicle exhaust has a low recognition rate and many human factors. It is difficult to "bring high-polluting vehicles to justice",

It is also impossible to repair these vehicles to a state where the actual exhaust emissions meet the standards.

As early as the 1960s, people had realized the advantages of the load test method and developed a series of detection methods, such as YTEST239,

IM240, etc. By the mid-1980s, from a variety of load The test method clarifies that the Acceleration Simulation Mode (ASM) is one of the best methods. The U.S. Environmental Protection Agency (EPA) In the 1990s, ASM was confirmed as an inspection method in I/M and has been widely adopted.

In addition, ASM is also the extension of assembly language source program, and assembly programmers also call assembly ASM

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Assembly Language (Assembly Language) It is a machine-oriented programming language. Assembly language is a very powerful programming language. It is also a language that utilizes all the hardware features of the computer and can directly control the hardware.

In assembly language, use mnemonics (Memoni) to replace operation codes, and use address symbols (Symbol) or labels (Label) to replace address codes. In this way, using symbols to replace the binary code of machine language turns machine language into assembly language. Therefore assembly language is also called symbolic language.

Programs written in assembly language cannot be directly recognized by the machine. A program is required to translate the assembly language into machine language. This translation program is called an assembler. The assembler is the language in the system software. Processing system software. Assembly language The process of translating assembly programs into machine language is called assembly.

Assembly language is easier to read, write, debug and modify than machine language, and it has all the advantages of machine language. However, when writing complex programs, the amount of relatively high-level language code is relatively large, and assembly language depends on the specific processor architecture and cannot be universal, so it cannot be directly transplanted between different processor architectures.

Characteristics of assembly language:

1. Machine-oriented low-level language, usually designed for a specific computer or series of computers.

2. It maintains the advantages of machine language and is direct and simple.

3. Can effectively access and control various hardware devices of the computer, such as disks, memory, CPU, I/O ports, etc.

4. The target code is short, takes up less memory, and has fast execution speed. It is an efficient programming language.

5. Often used in conjunction with high-level languages, it is widely used.

Application of assembly language:

More than 1.70% of system software is written in assembly language.

2. Some efficient programs such as fast processing, bit processing, and access to hardware devices are written in assembly language.

3. Some advanced drawing programs and video game programs are written in assembly language.

The extension of the source program of Assembly Language is .ASM (abbreviation of Assembly), so assembly programmers also call assembly ASM