Operating Systems and File Managements

The operating system assigns some properties to files, such as type or format, and updates other properties, such as date, size, and location

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Steps in the Boot Process

1. The computer receives power from the power supply or battery and sends it to the circuitry 2. The processor runs the bootstrap program 3. The bootstrap program executes a series of tests to check the components 4. The computer loads the operating system files into RAM, including the kernel 5. The computer loads the system configuration information and loads startup programs

Mobile OS

Android ios

DOS

Disk Operating System; first operating system that many used

kilobytes (KB) (thousands of bytes of data), megabytes (MB) (millions of bytes of data), gigabytes (GB) (billions of bytes of data)

File size is usually measured in __________ Files and folders may need to be compressed before they can be shared or transferred

UNIX

Multitasking operating system that now is available for most computers of all sizes.

System software:

The software that runs a computer, including the operating system and the utilities

desktop operating system

Windows macOS UNIX Linux Chrome OS

Server OS

Windows Server macOS Server UNIX

Operating system (OS):

a program that manages the complete operation of your computer or mobile device and lets you interact with it. - Platform - Most operating systems come installed on your computer or device

Input:

any data and instructions entered into the memory of a device

name, type, location, and size

file properties

User accounts

identify the resources a user can access when working with the computer

Output:

information processed into a useful form is the goal of input

Administrator account

provides full access

Files you work on using a _________ save changes as you make them

web app

File Placement

• Each folder can only include one file with the same name of the same type • Be as specific as possible when naming files • Copying or moving files: use the Clipboard or drag between file management windows • To open a saved file, navigate to the file's location using the file manager or the Open dialog box from within a program or app. Double-click it or select it and click the Open button.

Standard Operating System Functions • Starting and shutting down a computer or device • Managing programs • Managing memory • Coordinating tasks • Configuring devices

• Establishing an Internet connection • Monitoring performance • Providing file management • Updating operating system software • Monitoring security • Controlling network access

Operating Systems Features

• Graphical user interface (GUI) • Utilities • Software as a Service (SaaS) Open/closed source

The Purpose of an Operating System

• Responsible for coordinating the resources and activities on a computer • Manages interactions between hardware and software

Standard Operating System Functions

• Starting and shutting down a computer or device • Managing programs • Managing memory • Coordinating tasks • Configuring devices

File Names

• When you save a file, you must give it a name that follows your operating system's rules for file-naming conventions • Most file names contain an extension that tells about its contents, such as the type of platform or app on which the file can be used • File name extensions are added automatically when you save a file, but you can change the extension in some cases