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CLASS X WORKSHEET JULY 2026

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  Computer Applications Class X Internet Services (Chap 2)   Electronic mail (E- mail)-                                         E-mail stands for Electronic mail. It is the most widely used tool to send messages electronically i.e. through computers on a network. E-Mail Address-   Each user of email is assigned a unique name for his email account. This name is known as E-mail address. Different users can send and receive messages according to the e-mail address.   E-mail is generally of the form username@domainname. For example, sachin@mnclasses.com is an e-mail address where sachin is username and mnclasses.com is domain name. The username and the domain name are separated by @ (at) symbol. Spaces are not allowed in e-mail address. E-mai...
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Class IX Worksheet Basics of Operating System JULY 2026

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  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 Systems- 1.   Single User OS- It 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 wi...
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