What it is

Hint: It evolved from devices similar to the one below

Ye gods! Lots of people here have been to an electronics lab.
Cracked by: teju , udupendra , Keerthi Kiran M , Biki , yaksha , Arun Warrier , Ajay Parasuram , duriel , pratap , madhur , A , Shakeel , shivathilak , psrinivas , Amar , jake , Madan , Shiva , bobo , Anand Shankar , gammafunction , jayanth , svgreatest , shenoyvarun86 , varuns88 , shashank , Rohan and Dibyo.

teju, udupendra, Keerthi Kiran M, Biki, yaksha, Arun Warrier, Ajay Parasuram, duriel, pratap, madhur, A, Shakeel, shivathilak, psrinivas, Amar, jake, Madan, Shiva, bobo, Anand Shankar, gammafunction, jayanth, svgreatest, shenoyvarun86, varuns88, shashank, Rohan and Dibyo