The Register acts as a unit of memory. It is available in 8-bit, 16-bit, 32-bit, and 64-bit varieties.
There are 3 inputs and a single output.
The Load pin controls whether or not the current value is being output on the Output pin. The value is only output when there is a 
or 1 signal on the Load pin.
The Save pin controls whether or not the current value gets overwritten by the value that is detected on the Save Value. When a or 1 signal is detected on the Save pin, the value on the Save Value pin is stored. When the Save pin is in the 
or 0 position, no changes will be made to the value.