L2

L2, L², L02, L II, L.2 or L-2 may be :

In computing

In astronomy and space exploration

Aircraft

Eumel

EUMEL (pronounced oimel for Extendable Multi User Microprocessor ELAN System and also known as L2 for Liedtke 2) is an operating system which began as a run-time environment for the ELAN programming language. It was created in 1979 by Jochen Liedtke at the University of Bielefeld. EUMEL initially ran on the 8-bit Z80 processor, and was later ported to many different architectures.

EUMEL is based on a virtual machine using a bitcode and achieves remarkable performance and functionality. Z80-based EUMEL systems provide full multi-user multi-tasking operation with virtual memory management and complete isolation of one process against all others. These systems usually execute ELAN programs faster than equivalent programs written in languages such as BASIC, Pascal, or Cobol and compiled into Z80 machine language on other operating systems.

One of the main features of EUMEL is that it is persistent, using a fixpoint/restart logic. This means that if the power fails you only lose a couple of minutes of work: upon restart you continue working from the previous fixpoint with all program state fully intact. This is also known as orthogonal persistence.

L2 (music group)

L2 is a pop duo consisting of New York City based sisters Melissa Labbadia, 22, and Jessica Labbadia, 19. Their music has been featured on many popular celebrity sites, and they have had two singles on the Billboard Hot Dance/Club Charts.

Career

Early years

Melissa and Jessica Labbadia started singing, acting and performing at a young age. They recorded their first demo CD and wrote their first original song in 2005. The sisters went on to perform at many venues in New York City, including Manhattan dance clubs Tenjune and Splash; the rock clubs The Bitter End, DROM, Arlene’s Grocery, and The Cutting Room; cabaret style at Don’t Tell Mama in NYC. L2 have also opened for popular performers such as Ryan Cabrera, Donnie Klang and Anberlin.

2011-2012

In 2011, they released their single Criminal In Bed. The song played on Sirius/XM Radio along with many other FM stations. The band made their debut on the Billboard Hot Dance/Club charts with the Top 10 single Boys or Girls. The song got regular radio rotation on National Mix-shows across the country and played nationally in rotation on Music Choice Dance and AOL Radio, along with many Internet Radio stations and local FM radio stations. L2's single Insomnia made it to the number 3 spot on the Billboard Hot Dance/Club charts in February 2012, and was still on the charts in March.