Controlled Word Complementer

This circuit inverts all the input data bits or keep them unaltered depending on the state of the control input (CTL). An arrray of two-input XOR gates were used to perform the function. One of the input terminals of the XOR gates connects to a data bit, the other goes to the control input. If CTL is low the XOR gates follow the input data, if CTL is high the XOR gates invert the input data. Note: "Word" is used here with its generalized definition not with its meaning in specific computer architecture.