 In the 1980s Bulgaria was known as the " Silicon Valley of the Eastern Bloc " because of its large @-@ scale computing technology exports to COMECON states . The ICT sector generates 10 per cent of GDP and employs the third @-@ largest contingent of ICT specialists in the world . A National Centre for Supercomputing Applications ( NCSA ) operates the only supercomputer in Southeastern Europe . The Bulgarian Academy of Sciences is planning to buy another supercomputer in 2015 which will be used together with Hi @-@ Tech SME 's . 
