Lesson
Lesson-4.1.3- Understand how hardware, firmware and an operating system are required to run applications software. Applications are run on the operating system ??? The operating system is run on the firmware ??? The bootloader (firmware) is run on the hardware.
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Lesson-4.1.2-Describe the role and basic functions of an operating system. Including: ??? managing files ??? handling interrupts ??? providing an interface ??? managing peripherals and drivers ??? managing memory ??? managing multitasking ??? providing a platform for running applications ??? providing system security ??? managing user accounts.PreviousLesson-4.1.4- Describe the role and operation of interrupts. Including: ??? how an interrupt is generated ??? how it is handled using an interrupt service routine ??? what happens as a result of the interrupts ??? Software interrupts include division by zero and two processes trying to access the same memory location ??? Hardware interrupts include pressing a key on the keyboard and moving the mouse.Next