In computer architecture, 16-bit integers, memory addresses, or other data units are those that are at most 16 bits (2 octets) wide. Also, 16-bit CPU and ALU architectures are those that are based on registers, address buses, or data buses of that size. 16-bit is also a term given to a generation of computers in which 16-bit processors are the norm.

16-bit architecture[link]

The HP BPC, introduced in 1975, was the world's first 16-bit microprocessor. Prominent 16-bit processors include the PDP-11, Intel 8086, Intel 80286 and the WDC 65C816. The Intel 8088 was program-compatible with the Intel 8086, and was 16-bit in that its registers were 16 bits long and arithmetic instructions, even though its external bus was 8 bits wide. Other notable 16-bit processors include the Texas Instruments TMS9900 and the Zilog Z8000.

A 16-bit integer can store 2¹⁶ (or 65,536) unique values. In an unsigned representation, these values are the integers between 0 and 65,535; using two's complement, possible values range from −32,768 to 32,767. Hence, a processor with 16-bit memory addresses can directly access 64 KB of byte-addressable memory.

16-bit processors have been almost entirely supplanted in the personal computer industry, but remain in use in a wide variety of embedded applications. For example the 16-bit XAP processor is used in many ASICs.

The 16/32-bit Motorola 68000 and Intel 386SX[link]

The Motorola 68000 is sometimes called 16-bit because its internal and external data buses were 16 bits wide, however it could be considered a 32-bit processor in that the general purpose registers were 32 bits wide and most arithmetic instructions supported 32-bit arithmetic. The MC68000 was a microcoded processor with three internal 16-bit ALU units. Only 24-bits of the Program Counter were available on original DIP packages, with up to 16 megabytes of addressable RAM. MC68000 software is 32-bit in nature, and forwards-compatible with other 32-bit processors.^[1] The MC68008 was a version of the 68000 with 8-bit external data path and 1 megabyte addressing. Several Apple Inc. Macintosh models; e.g., LC series, used 32-bit MC68020 and MC68030 processors on a 16-bit data bus to save cost.

Similar analysis applies to Intel's 80286 CPU replacement called the 386SX which is a 32-bit processor with 32-bit ALU and internal 32-bit data paths with a 16-bit external bus and 24-bit addressing of the processor it replaced.

The 68000 processor of the Sega Mega Drive was a highly advertised feature of the video game system. Due to the saturation of this advertising, the 1988-1995 era (fourth generation) of video game consoles is often called the 16-bit era.

16-bit file format[link]

A 16-bit file format is a binary file format for which each data element is defined on 16 bits (or 2 bytes). An example of such a format is UTF-16 and the Windows Metafile Format.

16-bit memory models[link]

Similar to 64-bit's data models, the 16-bit Intel architecture allows for different memory models—ways to access a particular memory location. The reason for using a specific memory model is the size of the assembler instructions or required storage for pointers. Compilers of the 16-bit era generally had the following type-width characteristic:

Tiny

Code and data will be in the same segment (especially, the registers CS,DS,ES,SS will point to the same segment); near pointers are always used. Code, data and stack together cannot exceed 64K.

Small

Code and data will be in different segments, and near pointers are always used. There will be 64K of space for code and 64K for data/stack.

Medium

Code pointers will use far pointers, enabling access to 1 MB. Data pointers remain to be of the near type.

Compact

Data pointers will use far and code will use near pointers.

Large/huge

Code and data pointers will be far.^[2]

16-bit application[link]

A 16 bit application is any software written for MS-DOS, OS/2 1.x or early versions of Microsoft Windows which originally ran on the 16-bit Intel 8088 and Intel 80286 microprocessors. Such applications used a 20-bit or 24-bit segment or selector-offset address representation to extend the range of addressable memory locations beyond what was possible using only 16-bit addresses. Programs containing more than Failed to parse (Missing texvc executable; please see math/README to configure.): 2^{16}

bytes (64 kilobytes) of instructions and data therefore required special instructions to switch between their 64-kilobyte segments, increasing the complexity of programming 16-bit applications.

List of 16-bit CPUs[link]

This list is incomplete; you can help by expanding it.

• Data General
  • Nova
• Digital Equipment Corporation
  • PDP-11
  • LSI-11
• EnSilica
  • eSi-1600
• Freescale
  • Freescale 68HC12
  • Freescale 68HC16
• Infineon
  • XE166 family
  • C166 family
  • C167 family
• Intel
  • Intel 8086/Intel 8088
  • Intel 80186/Intel 80188
  • Intel 80286
  • Intel MCS-96
• National Semiconductor
  • IMP-16
• NEC
  • V20/V30
• Seiko Epson
  • EPSON S1C17 family
• Texas Instruments
  • Texas Instruments TMS9900
  • TI MSP430
• Western Design Center
  • WDC 65816/65802
• Zilog
  • Zilog Z8000

References[link]

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (October 2009)

1. ^ http://cache.freescale.com/files/archives/doc/ref_manual/M68000PRM.pdf?fsrch=1&WT_TYPE=Reference%20Manuals&WT_VENDOR=FREESCALE&WT_FILE_FORMAT=pdf&WT_ASSET=Documentation
2. ^ Borland Turbo C++ 1.01 in-program manual

Tinie Tempah
Tempah at the 2010 Way Out West Festival.
Background information
Birth name	Patrick Junior Chukwuemeka Okogwu
Born	(1988-11-07) 7 November 1988 (age 23) Plumstead, London, England
Genres	Grime, Hip hop, drum and bass
Occupations	Rapper, songwriter
Years active	2005–present
Labels	Parlophone, Disturbing London
Associated acts	Labrinth, Ellie Goulding, Swedish House Mafia, Chase & Status, Usher, Kelly Rowland, Eric Turner, Range, Emeli Sandé, Wiz Khalifa, Bei Maejor, Snoop Dogg, Ester Dean, Taio Cruz, Wretch 32, J. Cole, Lupe Fiasco, Rita Ora, Taylor ThePALACE
Website	tinietempah.com

Patrick Chukwuemeka Okogwu^[1] (born 7 November 1988),^[2] better known by his stage name Tinie Tempah, is an English rapper. He made his first mixtape in 2007; his first album, Disc-Overy, debuted at number one in October 2010 and was preceded by two number-one singles.

Early life[link]

Patrick Chukwuemeka Okogwu, was born in London, England on 7 November 1988, and is of Ibusa, Delta State, Nigerian origin. ^[3] He lived on the Aylesbury Estate in South East London until he was 12 with his parents and three younger siblings.^[3] He attended St. Paul's Catholic School in Abbey Wood, London SE2, (now known as St. Paul's Academy). He went on to study A Levels at St Francis Xavier Sixth Form College, SW12. Of his London upbringing, Tempah states: “London is one of the only places in the world where you can live in a council block and see a beautiful semi-detached house across the street. Growing up around that was inspirational, it kept me motivated".^[1]

Career history[link]

Early career[link]

In 2006, Tempah gained a great deal of airplay on British music TV channel, Channel AKA, for his song "Tears" He made his first mixtape in 2007 with 28 songs, freestyles and remixes, featuring Mz Bratt, Chipmunk and G-Unit.^{[citation needed]} His first album, Disc-Overy, debuted at number one in October 2010 and was preceded by the number-one singles "Pass Out" and "Written in the Stars" and the UK Top 5 hits "Frisky" and "Miami 2 Ibiza". In late 2007, he collaborated on a track ("Perfect GCD Hood Economics Room 147") with grime artist Ultra and producers/songwriters Agent X.

Tempah toured with Chipmunk in February 2010. His first break as a musician came when Sony launched its PlayStation Portable (PSP) and used a track entitled "Listen To The Vibe" featuring Yasmin and DJ Ironik, and "Atlantic/Warner" for the futuristic racing game, Wipeout Pure. This resulted in a promotional European tour alongside the likes of Sway and Dizzee Rascal.

Tempah, his manager and cousin Dumi Oburota founded the independent label Disturbing London primarily as an official outlet for Tempah's music, but with the idea of also signing other young artists. According to Dumi: "We wanted to have a platform to put out our music and there wasn't any Def Jam or Roc-A-Fella label equivalent in England. [Also] I wanted to create a major independent label with quality artists. I felt like the major labels had lost the passion for music."^[4] The activities of the label were initially largely funded by student loans and the proceeds from buying and selling cars.^[4]

When scout and music consultant Jade Richardson saw Tempah performing at the 2009 Wireless Festival she called Parlophone Records president Miles Leonard saying: “You’ve got to check out this guy Tinie Tempah. He came on at lunchtime and there’s about 1,000 kids screaming for him. He’s only put out one independent release and he’s got this huge audience.”^[5] Leonard and A&R Nathan Thompson visited Tempah and his manager Dumi at their studio a few weeks later and were hugely impressed to hear about the work they had already done in developing Tempah's career and by the ambitious plans they had for his future.^[5] Leonard told HitQuarters: "I thought it was incredible that an artist and manager were doing so much so soon with so little ... That impressed as much as the music."^[5]

Tempah announced his signing to Parlophone in October 2009 by running a competition on his blog, with the winner invited to High Tea at Claridges to celebrate the deal.^[6]

[edit] 2010–2011: Success and Disc-Overy

Tempah released his debut single "Pass Out" with Parlophone on 28 February 2010, with it entering the UK Singles Chart at number 1. Selling just over 92,000 copies, making this his first number 1 which it remained for two consecutive weeks. Tempah would later perform "Pass Out" on 25 June 2010 at Glastonbury on the Pyramid stage with Snoop Dogg. Tempah then announced his second single, "Frisky", which was released on 6 June 2010 entering the UK Singles Chart at number 2. Tempah supported Rihanna for four dates in May on her 10-date UK tour with Tinchy Stryder and Pixie Lott.^[8] Tempah performed at many summer balls at various universities around the United Kingdom.^{[citation needed]} Tempah performed at Radio 1 Big Weekend in Bangor on 22 May 2010 on the In New Music We Trust stage. He also toured with Mr Hudson in May 2010. Tinie Tempah played the Summertime Ball at Wembley Stadium on 6 June 2010, at Wakestock in Abersoch on 3 July 2010, both T4 on the Beach and the Wireless Festival in London's Hyde Park on 4 July, and V Festival on 21 and 22 August 2010. Tempah released his third single "Written in the Stars" on 19 September 2010. This again charted at number 1 in the UK Singles Chart selling over 115,000 copies in its first week, making it his biggest-selling single to date. The song also went on to chart in a number of other countries. Tempah went on to team up with Swedish House Mafia for his fourth single "Miami 2 Ibiza" which was released on 1 October 2010. This went on to reach a peak of number 4 in the UK Singles Chart and his first number 1 in the Netherlands Mega Single Top 100 chart. He released his long-awaited debut album, Disc-Overy on 4 October 2010 which featured all his previous charted singles.

On 11 October 2010, he kicked off his first UK tour which was supported by Chiddy Bang. He went on to win his first 2 MOBO Awards in October. Tempah also featured on the Tinchy Stryder single "Game Over" which was released on 15 November 2010. This reached number 22 on the UK Singles Chart. On 25 December, Tempah released his fifth single "Invincible" featuring Kelly Rowland, which peaked at number 11 on the UK Singles Chart. "Wonderman", featuring Ellie Goulding, was released and was the fifth official single. Tempah joined Usher on the European leg of his OMG Tour in January 2011. Tempah was also nominated for 4 Brit Awards making him the most nominated artist at the awards. His single "Written in the Stars" was used for a WrestleMania XXVII countdown promo during the WWE PPV Royal Rumble on 30 January 2011. It was later confirmed by WWE that it will be the official theme for Wrestlemania XXVII. It's also the theme song for the 2011 MLB Post Season. On 15 February 2011, he won his first ever Brit Award, for Best British Breakthrough Act. He also won a Brit for Best British Single.^[9] On 7 March 2011, Tempah expressed his desire for his next album to go triple platinum. "I reckon in 2011, towards the end of it, I'm going to do an arena tour – and sell it out – then I reckon I'm going to release another album, and fingers crossed it can go platinum again, and double platinum, and triple. Let's just sell a million."^[10] In early 2011, Tinie Tempah announced a UK Arena tour. Support acts included Nero, Labrinth and Chase and Status (After Party DJ Set).^{[citation needed]} In 2011, Labrinth revealed that Tempah will be releasing "Pass Out" in the United States, featuring a well recognised artist in the American rap game.^[11] On 28 November 2011, Tinie Tempah hosted an episode of the TV show, Never Mind the Buzzcocks.^[12] Also in November, Tinie Tempah released two tracks, "Like It or Love It" which featured both Wretch 32 & J. Cole, and "Lucky Cunt" which featured Big Sean. On 16 December, Tempah released a 9-track mixtape/EP titled Happy Birthday. In early 2012 Tempah featured with Eric Turner and Lupe Fiasco on a track called "Angels and Stars". Tempah's song "Written in the Stars" was used as the entrance song for the New York Giants before Super Bowl XLVI.

[edit] 2012–present: Demonstration

By December 2010 Tempah was writing a second album,^[13] saying there will be a more electronic and live feel to it. It was originally intended for a late 2011 release.^[7][14] but is now scheduled for October 2012.^[15] During an interview, Tempah commented on his second album: "I always like to work with different people on each project I do, just so you get a different sound and angle. I will be working with some of the same people I did for the first album, you know what they say ‘if it ain't broke then don’t try and fix it’."^[16] Tempah hoped to collaborate with other artists; "I really want to collaborate with Toronto's very own Drake. I think he's amazing at what he does. I'd also like to collaborate with Adele, Sleigh Bells, Lykke Li, Dev, James Blake ― those are the few that I'd really like to work with."^[17] Tempah announced in an interview with Rolling Stone that his next single is to be called "Till I'm Gone" which will feature Wiz Khalifa and is produced by Stargate.^[18][19] The single and the video song were released at the end of June 2011.^[20] Tinie Tempah, world renowned drummer Travis Barker and Irish boxing champion Katie Taylor, joined forces to launch Lucozade’s new Yes Campaign, which signals a repositioning of its sports and energy drink brand. Featuring a performance of Tempah's "Simply Unstoppable" with Travis Barker on drums, remixed especially for Lucozade Sport,^{[citation needed]} the campaign was released in Summer 2011.

Tinie Tempah has asked a number of artists to appear on his upcoming second album, including Gary Barlow, Chris Martin, Dizzee Rascal, and The Script.^[21]

At the Brit Awards in 2012, he announced his second album would be called 'Demonstration'.^[22]

Discography[link]

• Disc-Overy (2010)
• Demonstration (2012)

Awards and nominations[link]

References[link]

External links[link]

• Official website