Alan Turing was one of the most influential British figures of the 20th century. In 1936, Turing invented the computer as part of his attempt to solve a fiendish puzzle known as the ...

One of the problems with a classic Turing machine is the tape must be infinitely long. [Mark’s] Turing Ring still doesn’t have an infinite tape, but it does make it circular to save space. That along ...

Do computers think? Some experts say yes, some say no. —Time magazine, Jan. 23, 1950 How do we tell whether a machine thinks? Much of today’s discussion of the matter starts with British computer ...