Alan Kay
Alan Kay is an American computer scientist known for his work in the early development of object-oriented programming and graphical user interfaces. He played a key role in the development of the Smalltalk programming language and the concept of object-oriented programming, which has had a profound influence on modern software development. Important contributions and achievements Kay played a pivotal role in the development of the Smalltalk programming language, which introduced the concept of object-oriented programming (OOP). Kay contributed to the development of graphical user interfaces, which transformed the way users interact with computers. In recognition of his pioneering work, Alan Kay received the ACM A.M. Turing Award in 2003.