Class X 2022-23
NAME
Section
Class
Question:- 1. Write html code to create class time table
Q2. Make a collage of 4 images.
Q3. Write the html code for the following:-
1. INDIA
2 PAKISTAN
3 AFGHANISTAN
A. SRILANKA
B. BANGLADESH
C. NEPAL
Q4. Write HTML CODE for displaying
H20
X4+x3+2
CLASS IX PRACTICAL
https://forms.gle/5fcGBFfAuvzPrPqV9
CLASS X PRACTICAL
https://forms.gle/8ykuS2gLBB9oVL5M8
OR
https://forms.gle/yK3YESGos4hh39S2A
HTML-I (Chap 3)
HTML stands for Hypertext Markup Language. The word Hypertext was first
coined by Ted Nelson in 1960s. Markup language is a technique to write
documents, describing the general structure of the contents inside the
documents and not its actual appearance on the page or on the screen.
HTML allows user to link several related information already stored in the
computer or server that can be accessed from anywhere around the world.
Tim Berners Lee developed the HTML standard in 1989, and invented the
world wide web in 1991.
Features of HTML1. HTML documents are simple text files. Web browsers act as HTML
formatters.
2. There is no need of compiling the file as in case of other programming
languages.
3. It is not a case sensitive language.
4. HTML documents can be viewed on any type of computer platform.
Tools Required to create a webpage1. Text Editor- A text editor is used to create or compose HTML
documents. Examples- Notepad and wordpad.
2. A Web Browser- A Web browser is used to display and view the HTML
documents.
Examples- Internet explorer, Mozilla Firefox, opera and safari.
3. A Web server (optional)-
A web server is required when one want to store the HTML document.
TAG- A tag is an HTML command that controls the structure and appearance
of the page or document that is created. Every tag has attributes or special
properties.
The tags are always enclosed within a pair of angular brackets i.e. < and >.
CONTAINER ELEMENTS- This type of HTML elements require pair tags i.e. a
starting as well as an ending tag e.g., <TITLE>……</TITLE>,
<HEAD>…..</HEAD>.
EMPTY ELEMENTS- This type of HTML elements requires just a starting tag
and not an ending tag e.g. <BR>, <BASE>. Empty elements just carry out
their specific job e.g., <HR> inserts a horizontal rule and <BR> breaks a line.
HTML Tags and its usage1. <HTML>. It is a structural tag used to mark the beginning and end of
an HTML document.
2. <BODY>. It is a structural tag that encloses all the visible content of a
webpage.
3. <P>. It is a formatting tag used to mark the beginning of a new
paragraph.
4. <U>. It is a formatting tag used to underline text on a webpage.
5. <CENTER>. It is a formatting tag used to centralize text on a webpage.
6. <H1>. It is a formatting tag used to mark text as biggest heading.
7. <IMG>. It is a formatting tag used to add inline images on a webpage.
8. <OL>. It is a formatting tag used to add numbered lists on a webpage.
9. <LI>. It is a formatting tag used to mark list items in a numbered list on
a webpage.
10.<A>. It is a formatting tag used to add hyperlinks on a webpage.
Basic Structure of HTML-
<HTML>
<HEAD>
<TITLE>My first Web page </TITLE>
</HEAD>
<BODY>
The HTML tags that define your page go here
</BODY>
</HTML
Class IX Basics of Operating Systems (Chap 4)
Device Driver A device driver is a group of files that enable one or more hardware devices to communicate with the computer’s operating system. Each hardware device installed on a computer requires a different type of device driver or hardware driver. The device driver provides specific instructions to the operating system in order for the hardware device to perform properly. Types of Operating Systems1. Single User OSIt supports only one user at any point of time. There can be two subcategories of this OS type:
(i) Single Task OS- This OS supports single application at a time e.g., OS for mobiles, MS-DOS etc. (ii) Single User, Multitasking OS- This OS supports one user but can deal with multiple applications running at a time e.g. simultaneously running word document, a video, internet browsing, listening to music etc. Eg. Windows Vista, Windows 7/8, Linux, MacOS Leopard etc.
2. Multi program OSIt supports multiprogramming i.e. more than one user can be supported by it, therefore , more than one user programs are loaded and active in the main store at the same time. These active programs are executed using some techniques one by one. E.g. Unix, Linux, IMB AS400 etc.
3. Time Sharing OSThis OS uses the time sharing technique. Each active user program is given a fair share of CPU time, if the time elapses or and I/O operation is requested, CPU shifts over to the next job waiting and the previous program is put to wait or handed over to I/O manager. The active programs are scheduled for execution using certain job scheduling techniques. Eg. BSD Unix, NOS/VE, Genie etc.
4. Real Time OSIn real time OS, the jobs have fixed deadlines and the jobs have to be completed within their deadline. The system performance is measured by its ability to complete its jobs within the specified deadlines. E.g. LynxOS, RT, Linux etc.
5. Multiprocessing OSThe multiprocessing OS is capable of handling more than one processor as the jobs have to be executed on more than one processor. The multiprocessing OS should be capable of load sharing in case of identical processors so that the system’s efficiency improves. In case of unidentical processors, the multiprocessing OS should be able to control the super processor and in turn control the working of slave processors. E.g.- Unix, Linux, Windows NT etc.
1. Multiple choice questions:-
i. When the computer has to react within a guaranteed time to an input, which type of operating system is best? a. Multi-tasking b. Real time processing c. Batch Processing
ii. Which type of operating system allows multiple tasks to run at the same time, each taking turns using the resources of the computer? a. Real- time processing b. batch processing c. multi-tasking iii. Which of the following is NOT an operating system? a. Linux b. Windows XP c. Bendix
2. What are the different types of operating systems?
Ans2. The operating systems are of mainly following types: i. Single User OS ii. Multiprogram OS iii. Time Sharing OS iv. Real time OS v. Multiprocessing OS
3. What is Multi-user system?
Ans3. A Multi-user system is a computer system designed to be used simultaneously by more than one user. A system that enable more than one user to access the same data at the same time.
4. Write a short note on Device Driver.
Ans4. A device driver is a group of files that enable one or more hardware devices to communicate with the computer’s operating system. Each hardware device installed on a computer requires a different type of device driver or hardware driver. The device driver provides specific instructions to the operating system in order for the hardware device to perform properly.
5. Explain Time Sharing Operating System?
Ans5. This OS uses the time sharing technique. Each active user program is given a fair share of CPU time, if the time elapses or and I/O operation is requested, CPU shifts over to the next job waiting and the previous program is put to wait or handed over to I/O manager. The active programs are scheduled for execution using certain job scheduling techniques. Eg. BSD Unix, NOS/VE, Genie etc.
