Cis presentation group 'g'
- 1. A Presentation On System Software Presentation-2 Group : ‘G’ Nishiya Shakya Padam Limbu Ozone Maharjan Prabin Lama
- 2. Operating system Introduction Features Utility software Device driver Antivirus
- 3. System software is computer software designed to operate and control the computer hardware and to provide a platform for running application software. System software can be separated into two different categories. They are: Operating systems and Utility software
- 4. Introduction: An operating system (OS) is software that manages computer hardware and software resources and provides common services for computer programs. In other words, operating system is a organized set or collection of software programs that control the overall operation of a computer system.
- 5. The operating system is the most important program that runs on a computer. Without an operating system, we cannot communicate with computers. Operating systems perform basic tasks, such as: recognizing input from the keyboard sending output to the display screen keeping track of files and directories on the disk controlling peripheral devices such as disk drives and printers. Some examples of operating systems are: Android, IOS, Linux, OS X, Microsoft Windows, Windows Phone, Mac OS, Unix and DOS.
- 6. Some of the features of operating system are : File management: Operating system handles the file organizations in the secondary storage devices. Creates table of each files and directories, maintains authority over files etc. Security: OS maintains boundary of each job in the memory and each job are allowed to run only in that boundary.
- 7. User interface: The OS reads the commands entered by the user interprets them and executes them by hardware. Memory management: The memory management component of the operating system manages memory efficiently. And virtual memory is created . Event logging: It records all the events happened which is very much useful for tracing past records and troubleshoot if something goes wrong.
- 8. Input/output control: The operating system deals with the problems by making input and output devices independent. The task of managing input output devices like keyboard, monitor, storage etc is done by OS. Resource allocation and scheduling: Operating system schedules in order to make the best possible use of computer resources. OS is responsible for allocating processing time, memory and input-output resources.
- 9. Utility software is system software designed to help analyze, configure, optimize or maintain a computer. It helps to manage, maintain and control computer resources. Utility software usually focuses on how the computer infrastructure (including the computer hardware, operating system, software and data storage) operates. Examples of utility programs are antivirus software, backup software and disk tools etc.
- 10. Device drivers, commonly just called drivers, are software programs that allow input and output devices to communicate with the rest of the computer system. Most new operating systems recognize new hardware devices on their own and automatically install them, but sometimes they require a device driver cd for installation. Many device drivers come with system software when you buy a computer.
- 11. Device drivers should be updated periodically. This can be done through the suppliers website. Device drivers are very common for printers, scanners, video adapters and sound cards. For example, if you buy a printer, it may come with a CD that typically will include the correct driver. The advantage of this is that the hardware manufacturer can make sure you have the right driver for the printer.
- 12. Antivirus software (often abbreviated as AV) is computer software used to prevent, detect and remove malicious software. Antivirus software is a set of instructions that detects the type of virus in the computer and protects against it. Invaders like viruses, worms, Trojan Horse, script viruses, macro etc, delete or corrupt the data and consequently disrupt work.
- 13. Some of the antivirus software for desktops and notebooks available in the market today are as follows: avast! Free Antivirus Norton Anti Virus McAfee Virus Scan AVG antivirus Kaspersky Lab Trend Micro Antivirus Panda antivirus pro Comodo antivirus advanced King Soft Antivirus FortiClient Antivirus