ELECTRONIC DATA PROCESSING

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• Q1: Define Computer.
  Ans: A computer is an electronic device that processes data and performs tasks according to instructions.
• Q2: Write some uses of computers.
  Ans: Some of the uses are:

  • ➔ Education
  • ➔ Communication
  • ➔ Data storage
  • ➔ Designing
  • ➔ Entertainment
  • ➔ Banking
  • ➔ Business work
  • ➔ Internet browsing
• Q3: Write 4 uses of computers in business.
  Ans: The uses are:

  • ➔ Accounting
  • ➔ Payroll management
  • ➔ Inventory control
  • ➔ Online communication
• Q4: Write 4 uses of computers in education.
  Ans: The uses are:

  • ➔ Online learning
  • ➔ Research work
  • ➔ Exam preparation
  • ➔ Digital classrooms
• Q5: Name different parts of the computer.
  Ans: Some of the parts are:

  • ➔ Monitor
  • ➔ CPU
  • ➔ Keyboard
  • ➔ Mouse
  • ➔ Printer
• Q6: Explain through a diagram how a computer works.
  Ans:
• Q7: What does E.D.P stand for?
  Ans: E.D.P stands for Electronic Data Processing.
• Q8: Define Data Processing.
  Ans: Data processing is the collection and conversion of raw data into meaningful information.
• Q9: Define Electronic Data Processing.
  Ans: Electronic Data Processing is the use of computers to process data electronically.
• Q10: Define Information.
  Ans: Information is processed data that is meaningful and useful.
• Q11: Define Information Technology (IT).
  Ans: Information Technology is the use of computers and software to store, process, and share information.
• Q12: Define the role of computers in engineering.
  Ans: Computers help engineers in designing, testing, analyzing data, and solving complex engineering problems.
• Q13: Define Storage devices.
  Ans: Devices used to store data and files, e.g., hard drives, USB drives are called storage devices.
• Q14: What do you know about desktops?
  Ans: A desktop is a personal computer designed to be used at a fixed location.
• Q15: Define Hardware.
  Ans: The physical components of a computer system that we can touch are called hardware.
• Q16: Name 4 Hardwares.
  Ans: The hardwares are:

  • ➔ Keyboard
  • ➔ Mouse
  • ➔ Monitor
  • ➔ CPU
• Q17: Define Software.
  Ans: A set of instructions that tells the computer what to do is called software.
• Q18: Name 4 Softwares.
  Ans: The softwares are:

  • ➔ Windows
  • ➔ MS Word
  • ➔ Excel
  • ➔ PowerPoint
• Q19: Define Automation.
  Ans: Automation is the use of machines and computers to perform tasks without human effort.
• Q20: Define CAD Software.
  Ans: CAD software is used to create and design drawings and models on a computer.
• Q21: What is the use of CAD Software?
  Ans: CAD software is used for designing buildings, machines, and engineering models.
• Q22: Define CFD Software.
  Ans: CFD software is used to analyze the flow of liquids and gases using computers.
• Q23: What is the use of CFD Software?
  Ans: CFD software is used to study fluid flow, heat transfer, and air movement.
• Q24: Define Input Unit.
  Ans: The input unit is the part of a computer that accepts data from the user.
• Q25: Define Input devices.
  Ans: Devices that are used to enter data into a computer are called input devices. Examples: Mouse, Keyboard etc.
• Q26: Name 4 Input devices.
  Ans: The input devices are:

  • ➔ Keyboard
  • ➔ Mouse
  • ➔ Scanner
  • ➔ Microphone
• Q27: Define Output Unit.
  Ans: The output unit shows the result of processed data.
• Q28: Define Output devices.
  Ans: Devices that show the result of processed data are called output devices. Examples: Monitor, Printer etc.
• Q29: Name 4 Output devices.
  Ans: The output devices are:

  • ➔ Monitor
  • ➔ Printer
  • ➔ Speaker
  • ➔ Projector
• Q30: Define System Unit.
  Ans: The system unit is the main part of a computer that contains the CPU and internal components.
• Q31: Define System Devices.
  Ans: System devices are internal components required for computer operation.
• Q32: Name 4 System devices.
  Ans: The system devices are:

  • ➔ CPU
  • ➔ Motherboard
  • ➔ RAM
  • ➔ Power Supply
• Q33: What is the most widely used keyboard layout?
  Ans: The QWERTY keyboard layout is the most widely used.
• Q34: Define Magnetic disk.
  Ans: A storage device that uses magnetic storage to store data is called a magnetic disk.
• Q35: Define Floppy disk.
  Ans: A small, removable magnetic storage device used in older computers is called a floppy disk.
• Q36: Define Flash drive.
  Ans: A small, portable USB storage device used to store and transfer data is called a flash drive.
• Q37: Define Keyboard.
  Ans: A keyboard is an input device used to type data into a computer.
• Q38: Define Mouse.
  Ans: A mouse is a pointing device used to control the cursor on the screen.
• Q39: Name the types of mouse.
  Ans: The types are:

  • ➔ Mechanical mouse
  • ➔ Optical mouse
  • ➔ Wireless mouse
• Q40: Name the operations performed through a mouse.
  Ans: The operations are:

  • ➔ Click
  • ➔ Double-click
  • ➔ Drag and drop
  • ➔ Scroll
• Q41: Define Trackball.
  Ans: A trackball is an input device that uses a rolling ball to move the pointer.
• Q42: Define Joystick.
  Ans: A joystick is an input device used mainly for playing games and simulations.
• Q43: Define Touchpad.
  Ans: A touchpad is a flat input device that senses finger movement to control the cursor.
• Q44: Define Light pen.
  Ans: A light pen is an input device used to point or draw directly on the computer screen.
• Q45: Define USB.
  Ans: USB stands for Universal Serial Bus and is used to connect devices to a computer.
• Q46: Define Microphone.
  Ans: A microphone is an input device used to record sound into a computer.
• Q47: Define Speaker.
  Ans: A speaker is an output device used to produce sound from a computer.
• Q48: Define Plotter.
  Ans: A plotter is an output device used to print large drawings and designs.
• Q49: Define Monitor.
  Ans: A monitor is an output device that displays text, images, and videos on the screen.
• Q50: Name the types of monitors.
  Ans: The types are:

  • ➔ CRT Monitor
  • ➔ LCD Monitor
  • ➔ LED Monitor
  • ➔ Plasma Monitor
• Q51: Define CRT Monitors.
  Ans: CRT monitors use electron beams to display images on the screen.
• Q52: Define Plasma Monitors.
  Ans: Plasma monitors use small gas cells to produce images on the screen.
• Q53: Define Touch screen.
  Ans: A touch screen allows users to interact with the computer by touching the screen.
• Q54: Define Digital Camera.
  Ans: A digital camera is used to capture photos and videos in digital form.
• Q55: What does CRT stand for?
  Ans: CRT stands for Cathode Ray Tube.
• Q56: What does LED stand for?
  Ans: LED stands for Light Emitting Diode.
• Q57: What does LCD stand for?
  Ans: LCD stands for Liquid Crystal Display.
• Q58: Define Printer.
  Ans: A printer is an output device used to print text and images on paper.
• Q59: Name two types of Printers.
  Ans: The two types of printers are Impact printers and Non-impact printers.
• Q60: Name 4 Impact Printers.
  Ans: The impact printers are:

  • ➔ Dot Matrix Printer
  • ➔ Daisy Wheel Printer
  • ➔ Line Printer
  • ➔ Drum Printer
• Q61: Name 4 Non-Impact Printers.
  Ans: The non-impact printers are:

  • ➔ Inkjet Printer
  • ➔ Laser Printer
  • ➔ Thermal Printer
  • ➔ Photo Printer
• Q62: Write 4 main parts of Impact Printers.
  Ans: The main parts are:

  • ➔ Print head
  • ➔ Ribbon
  • ➔ Paper feed mechanism
  • ➔ Motor
• Q63: Write 4 main parts of Non-Impact Printers.
  Ans: The main parts are:

  • ➔ Ink or toner cartridge
  • ➔ Drum
  • ➔ Paper tray
  • ➔ Control circuit
• Q64: Define Line Printer.
  Ans: A line printer is an impact printer that prints one full line at a time.
• Q65: Define Laser Printer.
  Ans: A laser printer is a non-impact printer that uses laser technology to print.
• Q66: What is the speed of a Laser Printer?
  Ans: The speed of a laser printer is measured in pages per minute (PPM).
• Q67: State some important features of Laser printers.
  Ans: The features are:

  • ➔ High speed
  • ➔ Sharp print quality
  • ➔ Low noise
  • ➔ Cost-effectiveness for bulk printing
• Q68: What does LASER stand for?
  Ans: LASER stands for Light Amplification by Stimulated Emission of Radiation.
• Q69: Define Hardcopy.
  Ans: Hardcopy is the printed output produced on paper.
• Q70: Define Softcopy.
  Ans: Softcopy is the output displayed on a screen.
• Q71: How many pins are there in dot matrix heads?
  Ans: Dot matrix printer heads usually have 9 or 24 pins.
• Q72: Which unit is used to measure the speed of a dot matrix printer?
  Ans: The speed of a dot matrix printer is measured in characters per second (CPS).
• Q73: Write some benefits of USB.
  Ans: Some of the benefits are:

  • ➔ Portable
  • ➔ Easy to use
  • ➔ Provide fast data transfer
  • ➔ Are reusable
• Q74: Define USB.
  Ans: A standard device used to connect peripherals to a computer is called a USB (Universal Serial Bus). OR USB is a standard way to connect devices to a computer for data transfer and power.
• Q75: What do you know about a Scanner?
  Ans: A scanner is a device that converts physical documents into digital format.
• Q76: What are Application Softwares?
  Ans: Software designed to perform specific tasks for users is called application software.
• Q77: Write any 4 important features of Application softwares.
  Ans: The features are:

  • ➔ User-friendliness
  • ➔ Task-specificity
  • ➔ Ease of updates
  • ➔ Efficient performance
• Q78: Define System Software.
  Ans: System software controls the operation of the computer and hardware.
• Q79: Define Custom-built Software.
  Ans: Custom-built software is developed to meet specific user requirements.
• Q80: Define Packaged Software.
  Ans: Packaged software is ready-made software available for general use.
• Q81: Define Operating System.
  Ans: An operating system controls computer hardware and software resources.
• Q82: What are CRT monitors?
  Ans: CRT (Cathode Ray Tube) monitors are bulky display screens that use cathode ray tubes to display images.
• Q83: What is a Laptop?
  Ans: A laptop is a portable personal computer that can be used anywhere.
• Q84: Define Digital Computers.
  Ans: Digital computers process data in the form of numbers and binary digits (0 and 1).
• Q85: Write the classification of Digital Computers.
  Ans: Digital computers are classified into:

  • ➔ Super Computers
  • ➔ Mainframe Computers
  • ➔ Mini Computers
  • ➔ Micro Computers
• Q86: Define Analogue Computers.
  Ans: Analogue computers process data in continuous form such as temperature or speed.
• Q87: Define Super Computers.
  Ans: Super computers are very powerful computers used for complex scientific calculations.
• Q88: Define Mainframe Computers.
  Ans: Mainframe computers are large computers used by big organizations to handle large amounts of data.
• Q89: Define Special Purpose Computers.
  Ans: Computers designed to perform a specific task are called special purpose computers.
• Q90: Define Hybrid Computers.
  Ans: Computers that combine the features of both analog and digital computers are called hybrid computers.
• Q91: Define Micro computers.
  Ans: Small and affordable personal computers used by individuals are called microcomputers.
• Q92: Define Mini computers.
  Ans: Medium-sized computers used in businesses and institutions are called minicomputers.
• Q93: Define Data.
  Ans: Data is raw facts and figures that have no meaning on their own.
• Q94: Name the types of data.
  Ans: The types of data are:

  • ➔ Numeric Data
  • ➔ Alphabetic Data
  • ➔ Alphanumeric Data
  • ➔ Voice/Audio Data
  • ➔ Graphic Data
• Q95: Define Numeric Data.
  Ans: Numeric data consists of numbers only.
• Q96: What is the use of Numeric data?
  Ans: Numeric data is used for calculations and measurements.
• Q97: State the example of Numeric data.
  Ans: Examples of numeric data are 25, 100, and 4567.
• Q98: Define Alphabetic Data.
  Ans: Alphabetic data consists of letters from A to Z.
• Q99: What is the use of Alphabetic data?
  Ans: Alphabetic data is used to store names and text information.
• Q100: State the example of Alphabetic data.
  Ans: Examples of alphabetic data are COMPUTER and SCHOOL.
• Q101: Define Alphanumeric Data.
  Ans: Alphanumeric data consists of both letters and numbers.
• Q102: What is the use of Alphanumeric data?
  Ans: Alphanumeric data is used for passwords, codes, and usernames.
• Q103: State the example of Alphanumeric data.
  Ans: Examples of alphanumeric data are A12B and X9Z7.
• Q104: Define Voice/Audio Data.
  Ans: Voice or audio data includes sound and spoken words.
• Q105: What is the use of Audio data?
  Ans: Audio data is used for communication and entertainment.
• Q106: State the example of Voice data.
  Ans: Examples of voice data are recorded speech and songs.
• Q107: Define Graphic Data.
  Ans: Graphic data includes images, drawings, and pictures.
• Q108: What is the use of Graphic data?
  Ans: Graphic data is used to show information visually.
• Q109: State the example of Graphic data.
  Ans: Examples of graphic data are photographs, charts, and diagrams.
• Q110: What do you know about CPU?
  Ans: The CPU (Central Processing Unit) is the brain of the computer that performs calculations and processes data.
• Q111: Name the components of the CPU.
  Ans: The components are:

  • ➔ Arithmetic Logic Unit (ALU)
  • ➔ Control Unit (CU)
  • ➔ Memory Unit (MU)
• Q112: Define ALU.
  Ans: ALU stands for Arithmetic Logic Unit and performs calculations and logical operations.
• Q113: What is the function of the Arithmetic Logic Unit?
  Ans: The ALU performs arithmetic operations like addition and logical operations like comparison.
• Q114: Define CU.
  Ans: CU stands for Control Unit and controls all activities of the computer.
• Q115: What is the function of the Control Unit?
  Ans: The Control Unit directs the flow of data and instructions within the computer.
• Q116: Define MU.
  Ans: MU stands for Memory Unit and stores data and instructions.
• Q117: What is the function of the Memory Unit?
  Ans: The Memory Unit stores data, instructions, and results temporarily or permanently.
• Q118: Define Memory.
  Ans: Memory is the part of a computer used to store data and instructions.
• Q119: Name the types of computer Memory.
  Ans: The types of memory are Primary Memory and Secondary Memory.
• Q120: Define Primary Memory.
  Ans: Primary memory is the main memory that stores data currently in use.
• Q121: Define Secondary Memory.
  Ans: Secondary memory is used to store data permanently.
• Q122: Define Volatile Memory.
  Ans: Volatile memory loses data when power is switched off.
• Q123: Define Non-volatile Memory.
  Ans: Non-volatile memory retains data even when power is switched off.
• Q124: Define RAM.
  Ans: The temporary memory used by a computer while working is called RAM (Random Access Memory).
• Q125: Define ROM.
  Ans: The permanent memory that stores essential system instructions is called ROM (Read Only Memory).
• Q126: Define DRAM.
  Ans: DRAM is a type of RAM that needs to be refreshed regularly.
• Q127: Define SRAM.
  Ans: SRAM is a fast type of RAM that does not need refreshing.
• Q128: Define Bit.
  Ans: A bit is the smallest unit of data and can be 0 or 1.
• Q129: Define Byte.
  Ans: A byte is a group of 8 bits.
• Q130: One Byte is equal to how many Bits?
  Ans: One byte is equal to 8 bits.
• Q131: What are some disadvantages of using computers?
  Ans: Some of the disadvantages are:

  • ➔ Eye strain
  • ➔ Cybercrime
  • ➔ Job loss
  • ➔ Over-dependency
• Q132: Define LCD Monitors.
  Ans: Flat-panel display screens that use liquid crystal technology are called LCD monitors.
• Q133: Name some color monitors.
  Ans: Some color monitors are:

  • ➔ LCD monitors
  • ➔ LED monitors
  • ➔ OLED monitors
  • ➔ CRT monitors
• Q134: Define Programs.
  Ans: A set of instructions that a computer follows to perform a task is called a program.
• Q135: Define Programming.
  Ans: Programming is the process of writing instructions for a computer.
• Q136: What do you know about Programming languages?
  Ans: Programming languages are used to write software and control the operations of a computer.
• Q137: Enlist any 4 programming languages.
  Ans: The languages are:

  • ➔ Python
  • ➔ Java
  • ➔ C++
  • ➔ HTML
• Q138: Define Assembly Language.
  Ans: A low-level programming language that is closer to machine code is called assembly language.
• Q139: Define Low Level Language.
  Ans: A low level language is a programming language that is close to machine language and is hard for humans to understand.
• Q140: Define High Level Language.
  Ans: A programming language that is easy for humans to understand and use is called a high-level language.
• Q141: Name 4 advantages of High Level Language.
  Ans: The advantages are:

  • ➔ Easy to learn
  • ➔ Easy to write
  • ➔ Easy to debug
  • ➔ Machine independent
• Q142: Name 2 disadvantages of High Level Language.
  Ans: The disadvantages are:

  • ➔ Slower execution
  • ➔ Requires translation
• Q143: Name the classification of High Level Language.
  Ans: The classifications are:

  • ➔ Functional Language
  • ➔ Procedural Language
  • ➔ Object Oriented Language
  • ➔ Logic Programming Language
• Q144: Define Functional Language.
  Ans: Functional language is based on mathematical functions.
• Q145: Define Procedural Language.
  Ans: Procedural language follows step-by-step procedures.
• Q146: Define Object Oriented Programming Language.
  Ans: Object oriented language is based on objects and classes.
• Q147: Define Logic Programming Language.
  Ans: Logic programming language works on logical rules and conditions.
• Q148: Define Machine Language.
  Ans: Machine language uses binary numbers (0 and 1) to communicate with computers.
• Q149: Define language translator.
  Ans: A language translator converts program code into machine language.
• Q150: Define Compiler.
  Ans: A program that converts the entire source code into machine code at once is called a compiler.
• Q151: Define Interpreter.
  Ans: A program that translates and executes code line by line is called an interpreter.
• Q152: Define Source Program.
  Ans: The original code written by a programmer in a high-level language is called a source program.
• Q153: Define Assembler.
  Ans: An assembler converts assembly language into machine language.
• Q154: Define Source Code.
  Ans: Source code is the program written by the programmer.
• Q155: Define Executable Code.
  Ans: Executable code is the machine-readable form of a program.
• Q156: Define PASCAL.
  Ans: PASCAL is a high-level programming language used mainly for teaching and academic purposes.
• Q157: Define FORTRAN.
  Ans: FORTRAN is a high-level programming language used for scientific and engineering applications.
• Q158: Write the full form of the following.
  Ans:

  Abbreviation	Full Form
  RAM	Random Access Memory
  ROM	Read Only Memory
  DRAM	Dynamic Random Access Memory
  SRAM	Static Random Access Memory
  BIOS	Basic Input Output System
  PROM	Programmable Read Only Memory
  EPROM	Erasable Programmable Read Only Memory
  EEPROM	Electrically Erasable Programmable Read Only Memory
  BIT	Binary Digit
  CD	Compact Disc
  CD-R	Compact Disc Recordable
  CD-RW	Compact Disc Rewritable
  DVD	Digital Versatile Disc
  BD	Blu-ray Disc
  DOS	Disk Operating System
  BASIC	Beginners All-purpose Symbolic Instruction Code
  FORTRAN	Formula Translation
  OOP	Object Oriented Programming
  USB	Universal Serial Bus
  CPU	Central Processing Unit
  OS	Operating System
  GUI	Graphical User Interface