Administration Peripherals 15 Lesson Saida Abdieva Teacher of Foreign Languages Department a system administrator

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TASHKENT UNIVERSITY OF INFORMATION TECHNOLOGIES NAMED AFTER MUHAMMAD AL-KHWARIZMI
Administration
Peripherals
15
Lesson
Saida Abdieva
Teacher of Foreign Languages
Department
A system administrator
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A system administrator or sysadmin, is a person who is responsible for the up keep configuration, and reliable operation of computer systems; especially multi-user computers, such as servers. The system administrator seeks to ensure that the uptime, performance, resource, and security of the computers they manage meet the needs of the users, without exceeding a set budget when doing so.
To meet these needs, a system administrator may acquire, install, or upgrade computer components and software; provide routine automation; maintain security policies; troubleshoot; train or supervise staff; or offer technical support for projects.
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Duties of a System Administrator
A system administrator's responsibilities might include:
▶Applying operating system updates, patches, and configuration changes.
▶ Installing and configuring new hardware and software.
▶ Adding, removing, or updating user account information, resetting passwords, etc.
▶ System performance tuning.
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Types of Administrators/Users
In a larger company, following may all be separate positions within a computer support or Information Services (IS) department. In a smaller group they may be shared by a few System Administrators, or even a single person.
► Database Administrator
► Network Administrator
► Security Administrator
► Web Administrator
► Technical support
► Computer operator
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Operating Systems, Supporting Administration
► Microsoft Windows
► History: http://www.worldowindows.com/wintime.html
► 1975 - Microsoft Formed "April 4, 1975, Albuquerque, New Mexico, United States
► 1980- Xenix released by Microsoft: "A discontinued version of the Unis operating system for various microcomputer platforms licensed by Microsoft from AT&T Corporation in the late 1970s.
► 1981 - MS-DOS 1.0 released with new IBM PC
► 1985 - Windows 1.0 released
► 1992 - Windows 3.1 released
► 1993 - Windows NT 3.1 released (over 6 million lines of code)
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Peripherals
The term peripherals refers to all hardware devices that are attached to your computer and are controlled by your computer system
• Peripherals can be classified into input devices and output devices.
• Some can be both an input device and an output device
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Input Devices
• An input device is a piece of equipment that enables data to be entered into a computer for example:
• Keyboard
• Mouse
• Joystick
• Graphics Tablet
• Digital Camera
• Scanner
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Keyboards • The keyboard is made up of push-button switches which send a signal to the CPU each time you press them. • Keyboard standards vary with names like Deluxe, Natural and Cordless.
Mouse• A roller mouse has a ball that is rolled as the mouse is moved about on the desktop. • Pointing and clicking allows operations to be performed without having to remember complicated keyboard commands. • Optical mice are superseding ball mice and use a light instead of a ball.
Digital Cameras • Allow us to capture images and transfer them to a computer in the form of an image file. • Image quality is measured in pixels. • Some digital cameras can capture small amounts of video.