High Quality Content by WIKIPEDIA articles! The BRLESC I (Ballistic Research Laboratories Electronic Scientific Computer) was a first-generation electronic computer built by the United States Army`s Ballistics Research Laboratory (BRL) at Aberdeen Proving Ground with assistance from the National Institute of Standards and Technology (NIST), and was designed to take over the computational workload of EDVAC and ORDVAC, which themselves were successors of ENIAC. It began operation in 1962.