India-based Neutrino Observatory (INO)  has proposed construction of a 50k ton magnetised Iron Calorimeter (ICAL) in an underground laboratory located in South India. Main aims of this, now funded project are to precisely study the atmospheric neutrino oscillation parameters and to determine the ordering of neutrino masses . The detector will deploy about 28,800 glass Resistive Plate Chambers (RPCs) of approximately 2 m × 2 m in area. An ICAL RPC detector with a signal pick-up strip pitch of 30 mm, will have 128 analog signals to be readout and processed - 64 each of positive and negative polarity signals. Thus about 3.6 million detector channels are required to be instrumented. We will present in this paper, design of electronics, trigger and data acquisition systems of this ambitious and indigenous experiment as well as its current status of deployment. © Springer Nature Singapore Pte Ltd. 2018.