A M-bit thermometer code for the number k consists of k 1's in the least significant bit positions and M-k 0's in the more significant bit positions. A binary-to-thermometer code converter has N inputs and 2^N-1 outputs. It produces a 2^N-1 bit thermometer code for the number specified by the input.
For example, if the input is 110, then the output should be 0111111. Design a 3-7 binary-to-thermometer code converter.