Wang LOCI-2 Circuit Board 1501A

This board is involved with decoding of instructions from the keyboard and punched card programmer.

The board contains an instruction register made from six flip flops that are loaded with the current instruction entered either from the keyboard, or the punched card reader. The instruction in the instruction register is decoded from the six bit operation code into 45 different control signals that are routed to the other boards to implement the particular function commanded by the instruction code.