1. U = = 0.0625 (6.25%)  (3) The processor calculates the employee’s
Salary for this payment period
(3)
50s
(2) The processor waits until the hard drive
pump up the data to the processor
(2)
200s
(1)
10s
(4) The processor sends a command to save
the employee’s payment info. to the hard drive.
(4)
10s
(5)
(5) The processor waits until the hard drive
completes the saving data.
200s
(6)
(6) The processor sends a command to a printer
to print the payment info. of the employee
10s
(7)
(7) The processor waits until the printer
prints the payment information
800s
(1) The processor sends a command to read
an employee’s data to the hard drive.
80s
1280s
U =
= (6.25%) 