
<p><strong>Class Notes </strong></p><p></p><ul style="display: flex;"><li style="flex:1"><strong>Class: IX </strong></li><li style="flex:1"><strong>Topic: INPUT, OUTPUT, MEMORY AND STORAGE DEVICES OF A </strong></li></ul><p><strong>COMPUTER SYSTEM </strong><br><strong>Subject: INFORMATION TECHNOLOGY </strong></p><p>Q1. A collection of eight bits is called <strong>BYTE </strong>Q2. Which of the following is an example of non-volatile memory? </p><p><strong>a) ROM </strong></p><p></p><ul style="display: flex;"><li style="flex:1">b)RAM </li><li style="flex:1">c) LSI </li><li style="flex:1">d) VLSI </li></ul><p>Q3. Which of the following is unit of measurement used with computer system? </p><ul style="display: flex;"><li style="flex:1">a) Byte </li><li style="flex:1">b) Megabyte </li><li style="flex:1">c) Gigabyte </li></ul><p></p><p><strong>d) All of the above </strong></p><p>Q4. Which of the following statement is false? a) Secondary storage in non-volatile. b) Primary storage is volatile. </p><p>c) <strong>When the computer is turned off, data and instructions stored in primary storage are erased. </strong></p><p>d) None of the above. <br>Q5. The secondary storage devices can only store data but they cannot perform a) Arithmetic operation b) Logic operation c) Fetch operation </p><p><strong>d) Either of above </strong></p><p>Q6. Which of the following does not represent an I/O device a) Speaker which beep b) Plotter C) Joystick </p><p><strong>d) ALU </strong></p><p>Q7. Which of the following is a correct definition of volatile memory? a) It loses its content at high temperatures. b) It is to be kept in airtight boxes. </p><p>c) <strong>It loses its contents on failure of power supply </strong></p><p>d) It does not lose its contents on failure of power supply <br>Q8. One thousand byte represent a </p><ul style="display: flex;"><li style="flex:1">a) Megabyte </li><li style="flex:1">b) Gigabyte </li></ul><p></p><p>c) <strong>Kilobyte </strong></p><p>d) None of these <br>Q9.What does a storage unit provide? a) A place to show data b) A place to store currently worked on information </p><p><strong>b) A place to store information </strong></p><p>Q10. What are four basic components of a computer? a) Input devices, Output devices, printing and typing </p><p><strong>b) Input devices, processing unit, storage and Output devices </strong></p><p>c) Input devices, CPU, Output devices and RAM <br>Q11. What are examples of storage devices? a) Keyboards, flash drive, printer b)Flash drive, RAM, DVD-ROM <strong>c) Hard drive,DVD-ROM,flash drive </strong></p><p>Q12.What does RAM stands for <strong>RANDOM ACCESS MEMORY </strong></p><p>Q13.What kind of information can be found in a ROM? a) Software <br>Q14. Which of the following is soft copy and a hard copy? </p><p>i)Output on a monitor -<strong>Soft copy </strong>ii) Output on a printer-<strong>Hard copy </strong></p><p>b) The operating system </p><p>c) <strong>Basic I/O system </strong></p><p>Q15. What role do Input unit and Output unit play in computer system? Ans-Input unit helps us to take input from user and Output unit provides output in readable format to the user. Q16.What role does the memory play in the functioning of a computer system? </p><p>Ans-Memory is the internal storage area, which holds the data and instruction during processing. Q17.Discuss two popular input device. Ans –<strong>KeyBoard -</strong>which is used to type. <strong>Mouse</strong>-It is also known as pointing device points on screen. Q18. What is Pointing device? Name a popular pointing device. Ans- Device that controls movement of pointer on the screen. Example-Mouse. Q19.When is scanner used for input? Discuss various types of scanners. Ans-When we want to convert hard copy into soft copy (printed image converted into electronic form) </p><p><strong>Flat Bed Scanner</strong>- Commonly used scanner, it has flat surface<strong>. Sheet Scanner</strong>- It scan document by feeding paper into it<strong>. </strong></p><p><strong>Hand held Scanner</strong>-It is a small manual scanning device which moves over the object. <strong>Drum Scanner-</strong>Scans photo at a high resolution. Q20.Discuss functioning of light pen. </p><p>Ans-It is light sensitive input device used to draw on the screen. Q21.When barcode reader used for input and how? Ans-It is used to read barcode of products. It uses lasers to identify the position and thickness of the product. Q22.Discus various storage units. Ans-Bit, 1 Bit=8Byte, 1024 Byte=1KB, 1024 KB=1MB, 1024MB=1GB, 1024 GB=1TB Q23.There are two types of internal memory in computer system. Name and discuss them. <strong>ROM (Read Only Memory)- </strong>We only read information from this memory, we cannot change or write on it. <strong>RAM (Random Access Memory)- </strong>We can read as well as write on it. It is volatile memory. Q24.Compare and contrast internal and external memory. </p><p>Internal memory(RAM) is volatile, External memory is non- volatile Internal memory is directly access by CPU, External memory is not directly access by CPUInternal memory is faster than External memory Q25.Why auxiliary memory required? </p><p>Ans-To store huge data permanently. Q26. Discuss the usage of hard disk. Ans-It is used to store Operating system, software and all files. Q27.What are peripheral devices? Name some. Ans- It is an external device that provides I/O to the computer system. Example: Printers, projectors etc. Q28.What are port? What do they do? Name some ports? </p><p>Ports are used to connect external devices to the computer. Serial, USB, HDMI Q29.What is role of mother board in a computer system? Ans-It connects the various parts of a computer system together. Q30. Name some internal hardware of computer system. Ans- Motherboard, CPU, RAM Q31.Indentify following devices </p><p>Ans- Keyboad<strong>- Input</strong>, CD ROM drive—<strong>storage</strong>, Hard Disk drive- <strong>Storage</strong>, Printer-<strong>Output</strong>, Light Pen-<strong>Input</strong>, Monitor<strong>Output </strong>,RAM-<strong>Storage </strong></p><p>Q32.Some storage device is volatile memory. Explain what is meant by the term volatile. Ans-Its contents are lost when power is turned off. Q33. A veterinary surgery is going to install a new computer system. The vets must choose suitable hardware to use in their practice <strong>a) </strong>Give three input devices would be suitable for use in their practice – <strong>Keyboard, Mouse, Scanner b) </strong>Give three output devices would be suitable for use in their practice<strong>- Monitor, Printer, Speaker c) </strong>Give two storage devices would be suitable for use in their practice – <strong>Hard disk, Pen drive </strong></p><p><strong>Note:- Q1-14. Mark on the book. Q15-33 do it on your notebook. </strong></p><p><strong>Class Notes </strong></p><p></p><ul style="display: flex;"><li style="flex:1"><strong>Topic: Basic computer Operation(windows OS) </strong></li><li style="flex:1"><strong>Class: IX </strong></li></ul><p><strong>Subject: Information Technology </strong></p><p>Q1. A <strong>Folder </strong>can contain file as well as sub folders. Q2. What are files? What for do you need files? Ans- A program or document store on a disk. We need file to store data such as text, image, audio, video etc. Q3. What are folders? What are subfolders? Ans- A folder is a container that holds one or more files and folder. A folder stored inside another folder is called subfolder. <br>Q4. What is the difference between copying and moving file and folders? </p><p>Ans-When a files or folder is copied, then it is duplicated at target location. i.e file is available at original &target location. When a file or folder is moved, then it is removed from original location and placed at target location <br>Q5.When a folder is copied to another place do the subfolders in the folder also get copied? Ans- Yes it get copied. Q6. Give procedure to create a new folder in Windows OS. Ans- Go to desired location then right click select new->folder->write a name Q7 a) A folder can be opened by double clicking on <strong>Folder</strong>. b) To delete a file command to be clicked from edit menu is <strong>Delete</strong>. c) To rename a file , either <strong>Rename </strong>command from <strong>Organize </strong>menu is used or <strong>Rename </strong>command fromshortcut menu is clicked. <br>Q8. While copying files </p><p>a) Use the <strong>Copy </strong>and <strong>Paste </strong>options from the computer window’s organize button to copy a file to newlocation. </p><p>b) Click the <strong>Cut </strong>option at the organize button drop-down list to move a file. c) To copy, move or delete a file without using the organize button, right click the file to display the </p><p><strong>shortcut/Popup </strong>menu. </p><p>Q9. While deleting files a) When you delete a file , it is automatically sent to <strong>Recycle Bin</strong>. b) To open the Recycle Bin window, double click the <strong>Recycle Bin</strong>. c) When you restore a file from Recycle Bin, it is sent back to it’s <strong>Original </strong>location. d) Files are <strong>Permanently </strong>deleted when you empty the Recycle Bin. <br>Q10. What are the shortcut keys for </p><p>a) Cut operation <strong>Ctrl+X </strong>b) Copy Operation <strong>Ctrl+C </strong>c)Paste operation <strong>Ctrl+V </strong></p><p>Q11. What is the utility of clipboard area in memory? Ans: Short term storage area that store data when we cut or copied. </p><p><strong>Note:- Q7-10 Mark on the book. Q1-6 AND 11 do it on your notebook. </strong></p><p><strong>This document is absolutely prepared at home </strong></p>
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