The first Nairi (Armenian: Նաիրի, Russian: Наири) computer was developed and launched into production in 1964, at the Yerevan Research Institute of Mathematical Machines (Yerevan, Armenia), and were chiefly designed by Rachya E. Hovsepyan. In 1965, a modified version called Nairi-M, and in 1967 versions called Nairi-S and Nairi-2, were developed. Nairi-3 and Nairi-3-1, which used integrated hybrid chips, were developed in 1970. These computers were used for a wide class of tasks in a variety of areas, including Mechanical Engineering and the Economics.