Nors is a Zero Instruction Set Computer created by Calvin Games on February 14, 2017. It is Turing complete because it is equivalent to a 2-tag system.
The computer state is a string of bits P.
P0 is the initial state.
If the first bit in Pn is 1 the computer halts and outputs the successive bits in Pn.
If the length of Pn is odd then 0 is added to the end of Pn.
The new state Pn+1 is the odd bits of Pn NOR the even bits of Pn.
The computer repeats this process until it halts.
Hello World! (Outputs the ASCII code for the string "Hello, world!")
1 01001000 01100101 01101100 01101100 01101111 00101100 00100000 01110111 01101111 01110010 01101100 01100100 00100001