What is this?

Merry Christmas, folks!

Cracked by: Rogi , Bharath , byslexia , dineshk , Vijay , Logik , Nagendra U M , Manish Achuth , nishansolo , lotuseater , Rahul Rajeev , shrey , shrik , Nanda , v.chandrashekar , xeqtor , shenoyvarun86 , username , Anjul , Sumanth Patlolla , apar , jowens , Vivek , Pawankumar Hegde , Ananth , Bipin Banavalikar , uday , lanu , Debasish , Keerthi Kiran M , duriel , Dibyo , udupendra , vkamath , Qbrain , aditthya , Thejas V R , Rahulk , Moju21 , SS , Tushar S , Rithwik K , mankuTimma , Shwetha Maiya , Sanador and raklodramA

Answer:
The first working transistor!