Random Access Memory, EEPROM microchip, Electrical impulses, EEPROM chips

 24LC512 Series 512 Kb (64K x 8) 400 kHz Surface Mount I2C Serial EEPROM - SOIC-8

https://www.futureelectronics.com/p/semiconductors--memory--RAM--eeprom--i2c-interface-protocol/24lc512t-i-sn-microchip-4022303