Nada

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Nada (Juanes song)

Nada is a song by Colombian singer Juanes belonging to their debut album Fíjate Bien. The single went on sale in 2000. This song became known to Juanes as a great artist and one of the most successful singers of pop music.

Welcomed by the public

The song was well received in European and Latin American countries. The theme of the song is the life of an unfortunate person while in love. With this song the album Fíjate Bien had high sales in Hispanic countries, selling over one million copies worldwide, making it one of the best selling Spanish debut albums in the history of music.

Chart positions

The song arrived at number one in several countries in Latin America and Europe; it was in the top 40 Colombia, Mexico, and Spain, and quickly topped the charts. In Chile the song on its first day reached position 5 and the next week debuted at No. 1, this example was followed by several South American countries.

Music video

In the music video, Juanes is a convict awaiting his execution by electric chair. Various people pace around in the room with him, including a priest and a policeman, watching the clock impatiently while yelling in Juanes's ear. A woman and two children watch the execution from a window in a room above. When the clock strikes twelve, the executioner, who is shown as Juanes for a moment, throws the switch. A sign flashes "applause." After the execution is over, Juanes walks into the room with the woman and children.

ZPU

The ZPU (Russian: зенитная пулемётная установка, meaning "anti-aircraft machine gun mount") is a family of towed anti-aircraft gun based on the Soviet 14.5×114mm KPV heavy machine gun. It entered service with the Soviet Union in 1949 and is used by over 50 countries worldwide.

Quadruple (ZPU-4), two double- (ZPU-2 and ZU-2) and single-barreled (ZPU-1) versions of the weapon exist.

Precursor

The first dedicated Soviet mount for anti-aircraft machine guns was developed around 1928 by Fedor Tokarev and was adopted for service in 1931. It was a base for mounting up to four 7.62 mm PM M1910 (Russian Maxim) guns. This was also called a ZPU, although the name М-4 was also assigned to it. It served the Soviet armed forces in all major conflicts until 1945.

Description

Development of the ZPU-2 and ZPU-4 began in 1945, with development of the ZPU-1 starting in 1947. All three were accepted into service in 1949. Improved optical predicting gunsights were developed for the system in the 1950s.

All weapons in the ZPU series have air-cooled quick-change barrels and can fire a variety of ammunition including API (B32), API (BS41), API-T (BZT) and I-T (ZP) projectiles. Each barrel has a maximum rate of fire of around 600 rounds per minute, though this is practically limited to about 150 rounds per minute.

ZPU (microprocessor)

The ZPU microprocessor is a stack machine designed to run supervisory code in electronic systems that include a field-programmable gate array (FPGA).

The ZPU is notable because it is a relatively recent stack machine with a small but real economic niche, and it has a growing number of users and implementations. Many experts think that this is impossible.

The ZPU has been designed to require very small amounts of electronic logic, making more electronic logic available for other purposes in the FPGA. To make it easily usable, it has a port of the GNU Compiler Collection. This makes it much easier to apply than CPUs without compilers.

The ZPU is very small, but it is not fast. It keeps the intermediate results of calculations in memory, in a push-down stack, rather than in registers.

Zylin Corp. made the ZPU open-source in 2008.

Usage

Many electronic projects include electronic logic in an FPGA. It's wasteful to also have a microprocessor, so it is commonplace to add a CPU to the electronic logic in the FPGA. Often, a smaller, less-expensive FPGA could be used if only the CPU used less resources. This is the exact situation that the ZPU was designed to address.