What is the frequency for a periodic signal with a period of 2.5 ns 2.5 GHz 250 MHz 4.0 GHZ 400 MHz 2. Which decimal number is equivalent to 25 10 25 31 32 3. Convert the following decimal negative numbers to their 8-bit, 2's complement formulation: -37, -72, -101 4. Express each of the following signed numbers (2's complement format) in decimal: 1111 1011; 0000 0110; 1010 0001 5. What is the minimum number of bits required to represent -3,997 using 2's complement form.