II. Rewrite the text choosing necessary word

I. Rewrite the extract filling in the missing letters.

Oper…ting s…stems prov…de a cons…stent way for ap…lications to com…unicate with ha…dware without d…plicating set…ings or le…rning deta…ls about the hard…are. They also per…orm s…stem and file ma…ntenance ta…ks.

– Windows, Mac OS X, and Linux are com…on ope…ating s…stems for pe…sonal comp…ters.

– Linux – UNIX-like system, a free and open so…rce so…tware

– Mac OS X – UNIX based GUI OS desi…ned for Apple

– UNIX – m…lti-tasking, m…lti-user computer OS

– Handh…ld and embe…ded ope…ating systems, also known as mob…le oper…ting s…stems, are sim…lar in prin…iple to ope…ating s…stems such as Windows or Linus. These s…stems, however, are sma…ler an gene…ally have fe…er capab…lities than desktop oper…ting s…stems.

Troubleshooting Common Operating System Problems.

1. Incompatibility – application hardware/software and files need to be compatible with the computer’s OS.

2. File corruption – files can become corrupt as a result of power failure, turning off the computer without properly shutting it down, a virus, resource conflicts, outdated drivers, bad sectors or lost clusters on the hard drive, bad hardware/software installation and so on.

3. Disk Crashes – if your system is unstable, programs and even the OS shut down unexpectedly and you receive error messages/troubleshooting when you try to use the OS and applications.

III. Operating system can be categorized by a number of characteristics: Technology, Usage, and Licensing. Dictate the following text to your group mate. Check it together.

Popular handheld and embedded OS:

Android – this is an open-source OS for mobile devices such as smart phones and tablet computers, and is currently developed by Google. Android is based on a version of Linux.

Apple iOS – This OS, originally called the iPhone OS, is designed for mobile devices such as the iPhone, iPad, and iPod Touch. You interact with iOS using your fingertips to perform multitouch gestures. The main applications are designed for phone features, e-mail, Web browsing, and media playing.

BlackBerry – OS runs on handheld devices supplied by Research in motion (RIM). In addition to phone capabilities, this system also provides services such as multitasking, instant messaging, PIM capabilities, and access to Bluetooth devices.

Embedded Linux – This is a scaled-down Linux operating system used in devices such as mobile phones, media players, PDAs, smart watches, and many other types of devices that require an embedded OS.

Palm OS – a competing OS to Windows Mobile (also called Garnet OS) runs on Palm handhelds and other third-party devices. Some of the more common built-in applications include and address book, calculator, calendar, contacts, and phone book tools. This OS also includes handwriting- recognition software.

Symbian OS – is a multitasking OS designed for smart phones. Some of the more popular features include the capability to send and receive e-mail messages and faxes, maintain contact list, and browse the Web.

Windows Embedded CE – a scaled-down version of Windows OS. Designed for digital cameras, security robots, intelligent appliances, gaming devices, GPSs, media players, and set-up boxes.

Windows Phone – is a mobile OS that runs on smart phones and other types of handheld computers. Originally called Windows Mobile, this operating system allows you to perform tasks such as accessing e-mail, recording and watching video, exchanging instant messages, reading an e- book, playing games, and managing finances.

IV. How much do you know about System Components that the OS is responsible for? We invite you to match them.

System Components that the OS is responsible for:

1.b	Process Management	a	- keep track of which parts of memory are being used, allocate/deallocate memory space as required, etc.
2.	Main-Memory Management	b	- creation and deletion of user and system processes, deadlock handling, etc.
3.	Secondary-Storage Management	c	- deals with hardware specific drivers for devices, keeps it all hidden from the rest of the system.
4.	I/O System Management	d	- controlling access to programs, processes, or users.
5.	File Management	e	- generalizes network access
6.	Protection System	f	- interface between the user and the OS.
7.	Networking	g	- creating/deleting files and directories, backup, etc.
8.	Command-Interpreter System	h	- Free-space management, disk scheduling, storage allocation.

Дата добавления: 2015-03-31