CLASS IX

  SMTP (in about 200 words.), POP3 etc. till TELNET (in about 200 words).    SUMMER VACATION HOMEWORK/ASSIGNMENT CLASS IX 2023-24   SUBJECT: COMPUTER APPLICATIONS (165) Create a presentation in MS PowerPoint on the topic “Sustainable Development Goal- Zero Hunger Or Quality Education”. Presentation should have 8-10 slides. Mail the activity on the email ID: k12scholars@gmail.com Subject of the mail should be: Your name class & sec (e.g., Jiya Negi 9A) Parameters: Creativity, originality, overall presentation.  

 

 HARDWARE- Hardware represents the physical and tangible components of the computer i.e. the components that can be seen and touched. Input devices, output devices, CPU, floppy disk, hard disk, CD, DVD etc. are examples of computer hardware.  ● SOFTWARE- software represents the set of programs that govern the operation of computer system and make the hardware run.  ● SOFTWARE can be classified broadly into two categories.  1. System Software- refers to the programs that control internal computer operations and make best use of the hardware. The system software can further be classified into following categories: Operating system Language processor Utilities or Utility Software  2. Application Software- is the set of programs necessary to carry out operations for a specified application. These are the programs written by programmers to enable computer to perform a specific task such as processing words, inventory control, handling calculations and figures, medica...

 

Ø TCP/IP – Transmission Control Protocol / Internet Protocol  Ø SMTP – Simple Mail Transfer Protocol  Ø POP3 – Post Office Protocol 3  Ø HTTP – HyperText Transfer Protocol  Ø HTTPS - HyperText Transfer Protocol Secure  Ø FTP – File Transfer Protocol  Ø TELNET – Telecommunications Network  Ø SFTP: Secure File Transfer Protocol  Ø PPP: Point to Point Protoco  FTP : FTP is used to transfer large files. It is often used for organising files on a web server for a website. You can have private access to an area on an FTP server where you can upload your files. You can then give another user access to download the documents that you have shared.  Ø SFTP: It is the secure version of File Transfer Protocol (FTP).  Ø HTTP : HTTP transfers web pages from web servers to the client. All web page addresses start with http. An https address is a secure web address which has been encrypted. An https address is used for sites holding bank detail...

 INPUT DEVICES: The devices through which we enter data and instructions are called Input devices. Examples:  Keyboard: It is used to input data and instructions into the computer. A standard keyboard has 104 keys which are divided into four groupsTyping keys, Function keys, Navigation keys and Control keys. Sir Christopher Latham Sholes was the inventor of QWERTY keyboard. Joystick-It is a device used to control cursor on screen. Normally it is used in Games and specially designed simulation software. Barcode reader:- It is used to accept barcode inputs. A barcode is a series of vertical bars representing numbers and alphabets printed on product labels. One must have noticed all standard items like perfumes, greeting cards, books, cassettes available in the market have similar lines as shown in the figure, known as bar codes. These can be read with the help of bar code readers.  Mouse: It is a hand-held pointing device. It is used to control the movement of the pointer to se...

 Q1. Write the full forms of  a. PDA  B. DVD Q2. What are registers? Q3. Write short note on Mainframe computers? Q4. Explain types of computer according to principle of operation wise? Q5. Identify the category of computer a. Computer in offices, school computer lab b. Portable computers c. Most powerful computers d. Computer also known as mid rage servers