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OS-Lec-1 tle 3 finals.pdf - Unit 2 Introduction to...

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Unit 2Introduction toOperatingSystems
Learning ObjectivesWhat is an Operating System?History Of OSExamples of Operating System with Market ShareTypes of Operating System (OS)Functions of Operating SystemFeatures of Operating System (OS)Advantage of using Operating SystemDisadvantages of using Operating SystemWhat is a Kernel?Difference between Firmware and Operating SystemDifference between 32-Bit vs. 64 Bit Operating System2
What is an Operating System?AnOperating System (OS)is a software that acts asan interface between computer hardware componentsand the user. Every computer system must have at leastone operating system to run other programs.Applications like Browsers, MS Office, Notepad Games,etc., need some environment to run and perform itstasks.The OS helps you to communicate with the computerwithout knowing how to speak the computer's language.It is not possible for the user to use any computer ormobile device without having an operating system.3
What is an Operating System?4CPUInputOutputHardwareWindowsMacintoshLinuxOperatingSystemMS WordMS ExcelAdobePhotoshopApplicationEnd User
History Of OSOperating systems were first developed in the late 1950s tomanage tape storageThe General Motors Research Lab implemented the first OS in theearly 1950s for their IBM 701In the mid-1960s, operating systems started to use disksIn the late 1960s, the first version of the Unix OS was developedThe first OS built by Microsoft was DOS. It was built in 1981 bypurchasing the 86-DOS software from a Seattle companyThe present-day popular OS Windows first came to existence in1985 when a GUI was created and paired with MS-DOS.5
History Of OS640.3437.9515.444.340.950.140.06051015202530354045WINDOWSANDROIDIOSMAC OSLINUXCHROME OSWINDOWSPHONE OSMarket ShareShare
Types of Operating System (OS)Following are the popular types of Operating System:Batch Operating SystemMultitasking/Time Sharing OSMultiprocessing OSReal Time OSDistributed OSNetwork OSMobile OS7
Types of Operating System (OS)Batch Operating SystemSome computer processes are very lengthy andtime-consuming. To speed the same process, ajob with a similar type of needs are batchedtogether and run as a group.The user of a batch operating system neverdirectly interacts with the computer. In this typeof OS, every user prepares his or her job on anoffline device like a punch card and submit it tothe computer operator.

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Term
Summer
Professor
mam yago
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