Event counter is sleek system used to keep track of events. Event counter system is an independent unit with LED, event and reset buttons used for user interface. User generated events are displayed by LED (seven segment display scheme). Event counter Board consists of Microcontroller, counters, monostable multivibrator, transmitters & receivers (RX232, RX422). Event button is used to increment the events and reset button is used to reset the count value. Events are displayed on seven segment display mechanism for visual analysis. Event counter unit starts count from 000 and counts upto 999 events on pressing the event push button. The event value is transmitted over the RS232 / RS422 /TTL communication line to the recorder system.