Use the format SEEMMMM. All digits are decimal. The exponent is stored excess-50. The implied decimal point is at the beginning of the mantissa. The sign is 1 for a positive number, 7 for a negative...

Use the format SEEMMMM. All digits are decimal. The exponent is stored excess-50. The implied decimal point is at the beginning of the mantissa. The sign is 1 for a positive number, 7 for a negative number. Hint: Note carefully the number of digits in the mantissa!

a. Convert the decimal number 28643 to floating point.
b. What is the range of numbers that can be stored in this format?

c. What is the floating-point representation for: −28569?

d. What is the floating-point representation for 0.0000019557?