Bernard D.H. Tellegen Inventor of the pentode & the gyrator. June 24, 1900 - August 30, 1990.  Wikipedia         
Ernst Heinrich Weber German physician who is considered one of the founders of experimental psychology. (June 24, 1795 - January 26, 1878)  Wikipedia         
IEEE 802.11i-2004 (802.11i) Amendment to the original IEEE 802.11 witch improved security. Implemented as Wi-Fi Protected Access II (WPA2). Draft standard was ratified on June 24, 2004.  Wikipedia         
Radeon R9 Fury X  Released June 24, 2015.  Wikipeddia