A simple signed 12 bit floating format is required for a microcontroller. The exponent will occupy 4 bits in Excess code Show the design of the 12 bit word, and give the maximum and minimum values it can express. A simple signed 12 bit floating format is required for a microcontroller. The exponent will occupy 4 bits in Excess code Show the design of the 12 bit word, and give the maximum and minimum values it can express