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Professional Report Michael Jameson Kaplan University October 16, 2015 EXECUTIVE SUMMARY System software (systems software) is computer software designed to operate and control the computer hardware and to provide a platform for running application software. System software can be separated into two different categories, operating systems and utility software. The operating system (OS) is the best-known example of system software. The OS manages all the other programs in a computer. TABLE OF CONTENTS EXECUTIVE SUMMARY TABLE OF CONTENTS 1. OPERATING SYSTEMS 1.1 HOW DOES THE OS MANAGE THE PROCESSOR? 1.2 WHAT ACTIVITIES ARE COORDINATED BY THE OS? 1.3 HOW DOES THE OS MANAGE THE COMPUTER’S MEMORY? 1.4 WHAT IS VIRTUAL MEMORY AND HOW DOES IT WORK? 1.5 HOW DOES THE OS MANAGE PERIPHERAL DEVICES? 1.5.1 WHAT ARE DEVICE DRIVERS? 1.5.2 WHAT IS PNP? 2. WHAT IS THE BIOS 2.1 WHAT DOES THE BIOS DO? 2.2 WHAT IS POST? 2.2.1 WHAT ARE BEEP CODES? 2.3 WHAT IS THE KERNEL? 3. WHAT ARE THREE DIFFERENT OPERATING SYSTEMS? 3.1 MICROSOFT WINDOWS 8.1 3.2 APPLE OS X YOSEMITE 3.3 LINUX OS 4. RECOMMENDATION 1. OPERATING SYSTEMS An operating system (sometimes abbreviated as "OS") is the program that, after being initially loaded into the computer by a boot program, manages all the other programs in a computer. The other programs are called applications or application programs. The

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