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In 1976, Nadar quit a executive job with Delhi Cloth Mills (DCM) along with five of his friends to start a new company, Microcomp Limited. The focus of the company was design and manufacturing of scientific calculators. The venture provided its founders money to start a company that focused on manufacturing computers. The company was renamed as Hindustan Computers Limited (HCL) and received support from the Uttar Pradesh government to setup their manufacturing in Noida. The founders put together Rs 2 million in the venture. In 1981, NIIT was started to cater to the increasing demand in computer education. By early 2000s, Nadar divested his stake in this venture.
In 1996, HCL was split into two companies - HCL Technologies and HCL Infosystems.