What is "elka"

ELKA is a Bulgarian brand of electronic calculator, developed by the Central Institute for Calculation Technologies and built at the Elektronika factory in Sofia. The name is a contraction of ЕЛектронен КАлкулатор, or "electronic calculator", and the word elka has, by extension, become the generic name for a calculator.

The first model, the ELKA 6521, was introduced in 1965, and used germanium transistors. It weighed 8.5 kg and was the first calculator in the world to include a square root function. Its developers – Lyubomir Antonov, Petar Popov and Stefan Angelov, were the first scientists in the field of electronics to win the highest honour in Bulgaria at the time, the Order of Georgi Dimitrov.

Later models were the ELKA 22 (with a luminescent display) and ELKA 25, (with an in-built printer) also in 1965. The latter two models proved successful and in 1967 begin being produced at the Factory for Organizational Technology in Silistra.

In 1969, the Scientific research, study and design institute for electronic calculators was founded specifically for the design of calculators. This developed the lighter and more portable, but still relatively large, ELKA 40 and ELKA 50 models and series. The ELKA 1300 had a similar outward appearance to the 50 series, but was battery-powered. Meanwhile, the ELKA 77 was the first electronic cash register.

The first pocket model was the ELKA 101, introduced in 1974. This was the first in a large series, including the scientific ELKA 135. Other models in the 100 series included the ELKA 103, 105, 131 and 130M. These were all designed with export in mind, so all writing on them is in Latin script. The 100 series came in three bright colours – orange, green, and yellow, and their displays could be either red or green.

As of 2013 the factory in Silistra, now named "Orgatehnika", still produces ELKA calculators.

Ёлка, Elka or Yolka(born as Yelyzaveta Valdemarivna Ivantsiv, , on 2 July 1982) is a Ukrainian Russian language singer. Since 2010, she has lived in Moscow, Russia.

She started her musical career with the Uzhhorod group B&B. In 2004, she signed a contract with Vladislav Valov and released her successful debut album City of Deception (Город Обмана), which included the hits "Girl in the Peugeot" and "Good Mood". Subsequently, in collaboration with the shafts she released two albums: Shadows and This Magnificent World, neither of which were as successful as her debut album.

From 2010 to 2012, she was a judge on the popular Ukrainian version of The X Factor. In 2011, she gained great popularity with the song "Provence" and was nominated in three categories at the Muz-TV 2011. The fourth studio album from the singer, Points Apart, was popular amongst both critics and the public. The album received positive reviews from critics, who considered it the best pop album of 2011. Magazines such as Bill, Time Out and Interview Plate included it in their editorial lists for top albums of the year. The points are placed also topped the Russian rating album sales "2M. Russian Top 25". By the end of 2012, she was recognized as the most frequently heard performer on Russian radio stations.

Yolka is the three times winner of the Golden Gramophone Award (for the songs "Handsome Boy", "Provence" and "About You") and nominated for RMA channel MTV. In 2011, she was recognized as the Singer of the Year by Glamour magazine and among the ten most successful people in Ukrainian show business, according to the Focus magazine. In the same year she was named Singer of the Year at the ZD Awards, by the newspaper Moskovskij Komsomolets.