Use the smallest data type possible for non-constant values to decrease the size and increase the speed of an FPGA VI. If you use a While Loop, you can avoid using the 32-bit integer of the iteration terminal by using shift registers instead.

The following illustrations show how to create While Loops that run 2, 3, and 100 iterations without using the iteration terminal.

The constant initializing the shift register in the last illustration is an unsigned, 8-bit integer data type.