#### vsheladiya

##### Junior Member level 3

The logic count in a fpga/asic is considered as a number of 4-LUT usage now a days. I have doubt in calculating the number of 4-LUTs for any design, how can we calculate it? Is it depends on number of inputs or number of outputs?

Also how many 4-LUTs will be used if i design 16-bit shift register and 4-bit adder?

Thanks...