1 When a business chooses to hire a temp agency as a permanent employee, the business must pay the temp agency a permanent staffing fee ranging from 10-25% of the employee's first-year salary. Some large organizations have in-house temporary agencies which apply similar fees for their services. 2  For example, the University of Washington charges a 29% markup, with department's paying $18.06 per hour for a temporary employee who actually earns $14 per hour.
Interrupt chaning is a technique used to restore and call all of the interrupt handlers that share that same interrupt number. This is done by saving the previus Interrupt Routine (IR) in a function pointer. Then, installing the new handler, and calling the previus interrupt handler whenever the new IR is called.
Interrupt signals can cause a program to suspend itself temporarily to service the interrupt. Interrupt signals can come from a variety of sources. For example, every keystroke generates an interrupt signal. Interrupts can also be generated by other devices, such as a printer, to indicate that some event has occurred. These are called hardware interrupts. Interrupt signals initiated by programs are called software interrupts. A software interrupt is also called a trap or an exception.