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business computer application

In this lecture, we explore the crucial components of computer hardware, focusing on input and output devices. Discover various input devices, including keyboards, mice, and digital cameras, which allow users to enter data and instructions into computers. Learn about the functionality of output devices like monitors and printers, which present information to users. We'll also cover the role of biometrics in identity verification and different scanning technologies. This foundational knowledge is essential for any business computing curriculum.

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business computer application

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  1. business computer application College of Business University of Palestine Instructor: Mr. Ahmed Abumosameh

  2. Lecture 3.1 computer hardware

  3. Components of Hardware • Input Devices • The devices that are used to enter data and instructions into the computer are called input devices. The commonly used input devices now a days are: • Key board • Mouse • Touchpad • Track ball • Joystick • Light Pen • Digital Scanner • Digital Cameras • Microphone • Touch screen

  4. What are the two types of input? • Data • Unprocessed text, numbers, images, audio, and video • Instructions • Programs • Commands • User responses

  5. Input Devices • Key board • Alphanumeric Keypad • Numeric Keypad • Screen navigation & Editing Keys • Function Keys • Pointing Device • Used in GUI (Graphical User Interface) Operating system • Mouse • Track Ball • Touch pad

  6. Key Board

  7. Mouse & Track Ball

  8. Touch Pad

  9. Input Devices • Joystick • It is also a pointing device which has small box with moving handheld stick and buttons. • Used to play games • Light Pen • It is a handheld pen shaped device • Digital Scanner / Image Scanner • Read image and text printed on paper and store them in computer.

  10. Joystick, Light pen

  11. Digital Scanner

  12. Input Devices • Digital Cameras • Pictures • Video • Optical Readers • It use light source to read characters, marks printed on the paper • Bar Code Reader • Touch Screen • These are sensitive display screen, user can touch different areas of screen to operate • ATM Machines

  13. Digital Cameras & Bar Code Reader

  14. Touch Screen

  15. Video Input • Process of entering full-motion images into computer • Digital video (DV) camerarecords video as digital signals

  16. Video Input • PC video camerac—cDV camera used to capture video and still images, and to make video telephone calls on Internet • Also called PC camera • Web camc—cvideo camera whose output displays on a Web page

  17. Video Input • What is videoconferencing? • Two or more geographically separated people who use network on Internet to transmit audio and video data • Whiteboard is another window on screen that can display notes and drawings simultaneously on all participants’ screens

  18. Scanners and Reading Devices • What is an optical reader? • Device that uses light source to read characters, marks, and codes and then converts them into digital data • Optical character recognition (OCR)reads characters in OCR font • Optical mark recognition (OMR) reads hand-drawn pencil marks, such as small circles • Bar code scanner

  19. Scanners and Reading Devices • What is a turnaround document? • Document that you return to the company that sent it • Portion you return has information printed in OCR characters

  20. Scanners and Reading Devices • What is a bar code scanner? • Uses laser beams to read bar codes

  21. Scanners and Reading Devices • What is a bar code? • Identification code that consists of a set of vertical lines and spaces of different widths • UniversalProductCode(UPC)

  22. Scanners and Reading Devices • What are some widely used bar codes?

  23. Scanners and Reading Devices What is amagnetic-ink character recognition (MICR) reader? • Can read text printed with magnetized ink • Banking industry almost exclusively uses MICR for check processing

  24. Scanners and Reading Devices • What is a data collection device? • Obtains data directly at location where transaction or event takes place • Transmits data over network or Internet

  25. Terminals • What is a point of sale (POS) terminal? • Records purchases, processes credit or debit cards, and updates inventory • Swipe credit or debit card through card readerc—creads customer’s personal data from magnetic strip

  26. Terminals • What is an automatic teller machine (ATM)? • Self-service banking machine that connects to host computer through network

  27. Biometric Input • What is biometrics? • Authenticates person’s identity by verifying personal characteristic • Fingerprint scanner captures curves and indentations of fingerprint • Hand geometry system measures shape and size of person’s hand

  28. Biometric Input • What are examples of biometric technology? • Voice verification system compares live speech with stored voice pattern • Signature verification system recognizes shape of signature • Iris recognition systemreads patterns in blood vessels in back of eye • Biometric data is sometimes stored on smart card, which stores personal data on microprocessor embedded in card

  29. Output Devices • Monitors • Categories of Monitors • Monochrome Monitors • Grayscale Monitors • Color Monitors • Types of Monitors • CRT (Cathode Ray Tube) Monitors • Flat-Panel Monitors – LCD (Liquid Crystal Display) • Touch screen Monitors

  30. CRT & Flat Panel Monitor

  31. Monochrome & Grayscale Monitor

  32. Output Devices • Printers • Impact Printers • Dot Matrix Printer • Daisy Wheel Printer • Non-Impact Printers • Inkjet Printers • Laser Printers • Plotters

  33. Dots Matrix & Daisy Wheel Printer

  34. Laser & Inkjet Printers

  35. Plotters

  36. Speakers and Headsets • What is voice output? • Computer talks to you through speakers on computer • Some web sites provide voice output, such as songs, quotes, historical lectures, speeches, and books • Internet telephony allows you to have conversationover Web

  37. Other Output Devices • What is a facsimile (fax) machine? • Device that transmits and receives documents over telephone lines Stand-Alone fax machine

  38. internal fax card in system unit external fax modem fax machine Other Output Devices • What is a fax modem? • Modem that allows you to send and receive electronic documents as faxes • Fax modem transmits computer-prepared documents

  39. Other Output Devices • What is a multifunction peripheral? • Provides functionality of printer, scanner, copy machine, and fax machine • Sometimes called all-in-one devices • Advantage less space, less expensive, good for SOHO users • Disadvantage If the device breaks down, lose all functionality

  40. Other Output Devices • What is a data projector? • Device that takes image from computer screen and projects it onto larger screen • Two types • LCD projectors uses liquid crystal display technology, lower quality image than DLP projectors • DLP (Digital light processing)projectors uses tiny mirrors to reflect light, bright and colorful image

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