Class Notes Class: IX Topic: INPUT, OUTPUT, MEMORY AND STORAGE DEVICES OF A COMPUTER SYSTEM Subject: INFORMATION TECHNOLOGY Q1. A collection of eight bits is called BYTE Q2. Which of the following is an example of non-volatile memory? a) ROM b)RAM c) LSI d) VLSI Q3. Which of the following is unit of measurement used with computer system? a) Byte b) Megabyte c) Gigabyte d) All of the above Q4. Which of the following statement is false? a) Secondary storage in non-volatile. b) Primary storage is volatile. c) When the computer is turned off, data and instructions stored in primary storage are erased. d) None of the above. Q5. The secondary storage devices can only store data but they cannot perform a) Arithmetic operation b) Logic operation c) Fetch operation d) Either of above Q6. Which of the following does not represent an I/O device a) Speaker which beep b) Plotter C) Joystick d) ALU 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. c) It loses its contents on failure of power supply d) It does not lose its contents on failure of power supply Q8. One thousand byte represent a a) Megabyte b) Gigabyte c) Kilobyte d) None of these Q9.What does a storage unit provide? a) A place to show data b) A place to store currently worked on information b) A place to store information Q10. What are four basic components of a computer? a) Input devices, Output devices, printing and typing b) Input devices, processing unit, storage and Output devices c) Input devices, CPU, Output devices and RAM Q11. What are examples of storage devices? a) Keyboards, flash drive, printer b)Flash drive, RAM, DVD-ROM c) Hard drive,DVD-ROM,flash drive Q12.What does RAM stands for RANDOM ACCESS MEMORY Q13.What kind of information can be found in a ROM? a) Software b) The operating system c) Basic I/O system Q14. Which of the following is soft copy and a hard copy? i)Output on a monitor -Soft copy ii) Output on a printer-Hard copy 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? Ans-Memory is the internal storage area, which holds the data and instruction during processing. Q17.Discuss two popular input device. Ans –KeyBoard -which is used to type. Mouse-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) Flat Bed Scanner- Commonly used scanner, it has flat surface. Sheet Scanner- It scan document by feeding paper into it. Hand held Scanner-It is a small manual scanning device which moves over the object. Drum Scanner-Scans photo at a high resolution. Q20.Discuss functioning of light pen. 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. ROM (Read Only Memory)- We only read information from this memory, we cannot change or write on it. RAM (Random Access Memory)- We can read as well as write on it. It is volatile memory. Q24.Compare and contrast internal and external memory. Internal memory(RAM) is volatile, External memory is non- volatile Internal memory is directly access by CPU, External memory is not directly access by CPU Internal memory is faster than External memory Q25.Why auxiliary memory required? 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? 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 Ans- Keyboad- Input, CD ROM drive—storage, Hard Disk drive- Storage, Printer-Output, Light Pen-Input, Monitor- Output ,RAM-Storage 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 a) Give three input devices would be suitable for use in their practice – Keyboard, Mouse, Scanner b) Give three output devices would be suitable for use in their practice- Monitor, Printer, Speaker c) Give two storage devices would be suitable for use in their practice – Hard disk, Pen drive Note:- Q1-14. Mark on the book. Q15-33 do it on your notebook. Class Notes Class: IX Topic: Basic computer Operation(windows OS) Subject: Information Technology Q1. A Folder 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. Q4. What is the difference between copying and moving file and folders? 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 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 Folder. b) To delete a file command to be clicked from edit menu is Delete. c) To rename a file , either Rename command from Organize menu is used or Rename command from shortcut menu is clicked. Q8. While copying files a) Use the Copy and Paste options from the computer window’s organize button to copy a file to new location. b) Click the Cut 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 shortcut/Popup menu. Q9. While deleting files a) When you delete a file , it is automatically sent to Recycle Bin. b) To open the Recycle Bin window, double click the Recycle Bin. c) When you restore a file from Recycle Bin, it is sent back to it’s Original location. d) Files are Permanently deleted when you empty the Recycle Bin. Q10. What are the shortcut keys for a) Cut operation Ctrl+X b) Copy Operation Ctrl+C c)Paste operation Ctrl+V Q11. What is the utility of clipboard area in memory? Ans: Short term storage area that store data when we cut or copied. Note:- Q7-10 Mark on the book. Q1-6 AND 11 do it on your notebook. This document is absolutely prepared at home .