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FSU CGS 2060 - CHAPTER 5

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CHAPTER 5-As you learned application software is the software you used to do everyday tasks at home and at work-System software is a set of programs that help from the computer and coordinates instructions between application software and the computer's hardware devices-From the time you turn on your computer to the time you should of you are interacting with system software-There are 2 primary types of programs for system software: the operating system and utility programsWhat does system software do?-System software manages the computers resources- The OS manages the computer's hardware- OS also provides a consistent mean for software applications to work with the CPU- The OS is responsible for management scheduling and coordination of tasks as well as system maintenance-Your first interaction with the OS is the user interface which includes the desktop icons and menus-Hey utility program is a small program that performs many of the general housekeeping tasks for the computersDo all computers have operating systems?- Every computer has an operating system. Even cell phone, game consoles, automobiles, and small applications- OS is critical; the computer cannot operate without itAre all operating systems alike?- Some operating systems are embedded which means the device doesn't require user intervention at all- There are proprietary system developed specifically for the device- Some are available for personal and business use to run on personal computers are mobile devices-Others coordinate resources for many users on a network- These operating systems were traditionally classified into categories depending on the number of users and their tasks- Personal computers were at 1 time run by single time task, single user operating systems such as the Microsoft disk operating system MS-DOS-This was the first widely install the operating system in personal computers- You have to type specific commands and did not have icons or menus- OS allowed a single user to multitask- Network capabilities were added to facilitate sharing peripheral devices and Internet access among multiple computers at home. They became multi user, multitasking operating systems- Smart phones were initially single top of the vices, with combined functionalities; thenewer devices are beginning to add multitasking capabilitiesTypes of operating systems- Categorize by the type of device in which they are installed-Real time operating systems: why do machines with built in computers need an operating system?- Machinery that is required to perform a repetitive series of specific tasks in an exact amount of time requires a real time operating system RTOS- Also referred to as in embedded systems-Must guarantee certain response times for particular computing task- There are no commercially available standard RTOS software programs- An example is the Mars Reconnaissance OrbiterWhere else are ROTSs in use today?-Car engines, inkjet printers, medical devices, and many types of robotic equipmentWhat kind of operating system controls a simple cell phone?- Unlike smartphone, simple cell phones are single function devices- They use firmware which are instructions permanently installed onto computer chips that can be updated- Other devices that use it are portable audio players, digital cameras, and gaming consolesOperating systems for networks, servers, in mainframes: what kind of operating system Do networks use?- A multi user operating system also known as network operating system- Enables more than 1 user to access the computer system at 1 time by efficiently handling and prioritizing request from multiple users-How many users simultaneously access the server, which is the computer on a network that manages network resources such as printers?- A printer on a network will need to produce documents at 1 time and in the order requested. This is the job of the OS- Examples of network operating systems are Windows Server, Linux, and UnixWhat is Unix?- A multi user multi task operating system that works primarily with mainframes-Developed in 1969 by Ken Thompson and Dennis Ritchie of AT&T- The UNIX code was initially nonproprietary meaning that no company owned it. Now it belongs to company called the open group- Vendors can pay a fee and then modify the Linux code to run specifically on their hardwareWhat other kind of computers require a multi user operating system?- Mainframes and supercomputers- Mainframes are responsible for storing, managing, and simultaneously processing data from all users. Falls into multiuser category-Examples of mainframes are Unix and IBM-Super computers are used to solve complex problems or to perform massive computationsOperating systems for mobile devices: what kind of operating system does a smartphone use?- Operating systems that are found on smartphones include Symbian, blackberry, Windows Mobile, iPhone iOS, Android, and WebOsDo gaming consoles and personal media players required operating system?- Yes, all require some form of custom my system software that is developed specifically for the particular deviceOperating systems for personal computers: what is the Microsoft Windows operating system?- Microsoft when does begin as MS-DOS-Later versions were Windows 95, XP, and Vista, in the newest Windows 7- Windows 7 give users the touch screen monitors the ability to use touch commands-Windows improvements have concentrated on functionality, friendliness, improving internet capabilities, privacy, and securityWhat is the difference between the various additions of Windows 7 operating systems?-Starter and Home Premium, professional, and ultimate are available operating systems intended for different uses such as business or personal- The 32 bit version is built for computers that have up to 4 gigabytes of RAM-The 64 bit version is for systems with more than 4 gigabytes of RAMWhat is the Mac operating system?-1984 Mac OS became the first commercially available of operating system to incorporate a graphical user interface GUI with user friendly point and click technologyDoes it matter what operating system is on my computer?- The processor determines the operating system. This combination is known as the computers platform- In 2006 Apple discontinue the use of Power PC processors and started to use Intel-Most applications software is also operating system dependentCan I have more than 1 operating system on my computer?- Some Mac users may want to have both Mac OS X and windows on their machines- Today


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