Main Page | See live article | Alphabetical index Elka 22 is the first Bulgarian electronic calculator, released in 1965. This 8.5kg electronical monster, has 3 registers and operates with 12 decimal digits. Addition speed is 0.3 seconds per operation, and division speed is 0.5 sec. Power consumption is 35 Watt. This calculator was widely used in Bulgaria and USSR until 1980. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.