Скачать или смотреть JAC Class 11th Computer Science Chapter 2 Software Concepts| What is Software?

Class 11th Computer Science Ka second Chapter Software Concepts. JAC NCERT Book Class 11 Computer Science Chapter 2. NCERT Book Class 11 Computer Science Chapter 2. NCERT Book for Class 11 Computer Science Chapter 2 NCERT Book Class 11 Computer Science Chapter 2 Encoding Schemes and Number system. Software Concepts. Encoding Schemes and Number System is available for reading or download on this page. Students who are in Class 11 or preparing for any exam which is based on Class 11 Computer Science can refer NCERT Book for their preparation. Digital NCERT Books Class 11 Computer Science pdf are always handy to use when you do not have access to physical copy. Here you can read Chapter 2 of Class 11 Computer Science NCERT Book. Also after the chapter you can get links to Class 11 Computer Science Notes, NCERT Solutions, Important Question, Practice Papers, etc. Scroll down for Encoding Schemes and Number System from NCERT Book Class 11 Computer Science Book & important study material. This page contains the CBSE class 11 Computer Science with Python chapter 2, Software Concepts . You can find the questions/answers/solutions for the chapter 2 of Unit 1 of CBSE class 11 Computer Science with Python in this page. Hardware is of no use without software and software cannot be used without hardware.’ Explain.
The saying Hardware is of no use without software and software cannot be used without hardware is indeed true because every computer systems have both hardware and software existing together and each depend on the other. Hardware refers to the tangible part of the computer that is used to interact with the computer. Software refers to set of programs which are used to perform various on the computer and there by controlling the operations of the computer. The hardware needs software to perform its operations. Software requires hardware on which it can reside and run. Hence, only withthe two co-operating can the actual working of the computer take place.
b) How can the software be classified? Name at least one software in each of the categories.
At a broad level, the software can be classified as follows.
1) System software. Examples include Windows, Machintosh, Linux, Android iOS, C++ compiler, Java interpreter etc.
2) Utility software. Examples include Norton Antivirus, WinZip compressor, Windows Explorer etc.
3) Application software. Examples include Office 365 suite (which includes Microsoft Word, Microsoft Excel etc), Oracle, MS SQL Server etc.
The following diagram gives more detailed classification of the software. What is an operating system? Write names of any two popular operating systems.
An operating system is a crucial part for the operation of the computer. It is the first program that is loaded into the memory as soon as the computer is switched on. It is a set of instructions and programs that monitor and regulate the working of a computer. It is also responsible to provide various services which the application software, programmers and users use. Few of the various responsibilities of the operating system are as follows:
a. Managing the hardware
b. Managing the software
c. Input processing
d. Output Processing
e. Information flow into and out of the processor
f. Prioritisation of various tasks to be handled etc
Operating system also acts as a interface which the user can interact with to communicate with the computer hardware.
Few of the most popular Operating systems are Windows, Macintosh, Linux, Unix, Solaris etc. What is the role of a Page Map Table in Virtual Memory Management?
Using the virtual memory technique, it is possible to run programs that require memory more than the main memory of the computer. While using this technique, the program is partially loaded onto the memory and starts executing. To achieve this, the operating system divides the main memory into multiple fixed-length continuous blocks called pages. A part of the large program is then loaded onto the main memory. This is known as active set. The remaining part of the program is then stored in the secondary storage device in the form of blocks or sectors or tracks. Page Map Table (PMT) helps the operating system to keep track of the mapping of in which page of main memory is storing which block of secondary memory. It uses the virtual addresses to map either the main memory or the secondary memory. Explain the major functions of an operating system.
Few of the salient functions of the operating system are as follows:
1. Processor Management: In this, it manages the CPU through scheduling in which it allots the CPU time to different processes. Scheduling either priority scheduling in which the tasks are run based on the priority or it can be round robin/time sharing in which each task is run for a fixed amount of time.
2. Divice Management: In this, the operating system communicates with the hardware and the attached devices and maintains a balance between them and the CPU.