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IT 118: AHLAEI Chapter 2
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IT 118: AHLAEI Chapter 2


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  • 1. Chapter 2 Hospitality Technology Components Managing Technology in the Hospitality Industry Sixth Edition (468TXT or 468CIN)© 2011, Educational Institute
  • 2. Competencies for Hospitality Technology Components 1. Identify and describe system input components. 2. Identify and describe system output components. 3. Explain the function of a system’s central processing unit and distinguish read-only memory from random access memory. 4. Identify and describe common external storage devices. 5. Explain how the processing capability and speed of a system are measured.© 2011, Educational Institute (continued) 2
  • 3. Competencies for Hospitality Technology Components (continued) 6. Identify and describe components or devices commonly added on to a system. 7. Explain computer hardware configurations and interface connections. 8. Define two broad categories of software and explain the function of an operating system. 9. Discuss types of computer networks. 10. Identify and describe components fundamental to Internet operations.0© 2011, Educational Institute 3
  • 4. Hospitality Technology Components • Hardware • Software© 2011, Educational Institute 4
  • 5. Hardware • They are visible, moveable and easy to identify. • Has three (3) components: – Input/Output (I/O) – Central Processing Unit (CPU) and; – External Storage Device© 2011, Educational Institute 5
  • 6. Input Components Keyboards • Function keys • Alphabet keys • Cursor control keys • Numeric keys© 2011, Educational Institute 6
  • 7. Touch screen Terminals • Can employ a grid of tiny beams of light over a display screen. • Effective as devices for food service, self- check in kiosks and navigational screens.© 2011, Educational Institute 7
  • 8. Other Input Components • Computer Mouse – Small pointing device that’s designed to fit comfortable under a users hand. – Conntected to the processor by a serial cable or a wireless infrared sensor.© 2011, Educational Institute 8
  • 9. Other Input Components • Scanners – Capable of translating a page of text or graphic image into a machine readable format. – Digitizes information to be recognized by the computer – Flatbed scanners, hand held scanners are examples of this.© 2011, Educational Institute 9
  • 10. Other Input Components • Voice Recognition – Instructions spoken using a human voice. – Also known as Automated Speech Recognition (ASR) – Converts spoken data into electronic form.© 2011, Educational Institute 10
  • 11. Other Input Components • Handheld devices (mobile phone, palmtop PC, personal digital assistant (PDA))© 2011, Educational Institute 11
  • 12. Monitors • Color graphics adapter (CGA) – Low-end display RGB • Enhanced graphics adapter (EGA) – Uses Digital signals. – Clearer and has better quality of resolution compared to CGA© 2011, Educational Institute 12
  • 13. Monitors • Video graphics array (VGA) – Best for desktop publishing. Uses Analog Signals • Super video graphics array (SVGA) – Uses both digital and analog signals (VGA and DVI)© 2011, Educational Institute 13
  • 14. Monitors • Liquid crystal display (LCD) – Blue or Black letters on a grayish white background (found on handheld units) • Gas Plasma (GP) – Orange letters on a black screen© 2011, Educational Institute 14
  • 15. Printers • Impact printers – Movement of a print head or paper feeding mechanism to place data on the page. • Dot matrix printers – Form characters by firing a vertical line of pins through an inked ribbon onto the paper.© 2011, Educational Institute 15
  • 16. Printers • Non Impact Printers – Print positioning is achieved using electrical signals. – Techniques to print the image on paper include: Laser techniques, Inkjet sprays Xerographic processes Electrostatic methods and Electrothermal methods© 2011, Educational Institute 16
  • 17. Printers • Thermal printers – Also known as electro-thermal printers. – Works by burning a protective layer off specially treated paper to reveal ink – Restricted to point-of-sale Printer applications© 2011, Educational Institute 17
  • 18. Printers • Ink jet printers – Sprays a minute and finely controlled jet of ink onto a paper.© 2011, Educational Institute 18
  • 19. Printers • Laser printers – Quiet, highly efficient and more expensive than ink jet printers. – Uses laser technology to print documents. – Electronically controlled laser beam traces out the desired character to be printed.© 2011, Educational Institute 19
  • 20. I/O Components in the Hotel Industry • Most have adopted touch screen and hand- held units. • CRT units. • Common equipment include: POS, Kitchen Monitors and Specialty handheld devices. • They also produce soft copies and hard copies of output.© 2011, Educational Institute 20
  • 21. The Central Processing Unit • The most important hardware component found within an automated system. • Also called the brain of the system. Responsible for controlling most other system components.© 2011, Educational Institute 21
  • 22. The Central Processing Unit • Arithmetic and Logical Unit – Responsible for all mathematical, sorting, ranking and processing functions of the CPU • Control Unit – Determines which peripheral device in the system can be accessed by the CPU. – Determines what unit is capable of interacting directly with the CPU. – Online and Offline status of peripherals© 2011, Educational Institute 22
  • 23. The Central Processing Unit • Operating System – Orchestrates the hardware and the software within the system. – Establishes the systems priorities and directs its resources to accomplish desired tasks. • Internal (Primary) Memory© 2011, Educational Institute 23
  • 24. The Central Processing Unit© 2011, Educational Institute 24
  • 25. ROM/RAM Read-only memory (ROM) • “Reads” but cannot “write” • Nonvolatile memory • Does not require a constant power supply Random access memory (RAM) • Read/write memory • Volatile memory • Contents lost if power supply interrupted or turned off© 2011, Educational Institute 25
  • 26. External Storage Devices Magnetic tapes • Sequential access medium Magnetic disks • Formatting • Random access medium • Diskette/floppy disks • Zip disks Hard disks© 2011, Educational Institute (continued) 26
  • 27. External Storage Devices (continued) USB drives • High-speed, high-capacity • Hot-swapping, hot-plugging Optical disks • Compact disc—read only (CD-R) • Compact disc—read and write (CD-RW) • DVD—optical storage device© 2011, Educational Institute 27
  • 28. Measuring System Processing Capability and Speed Microprocessor – The Central Processing Unit CPU Speed—“Clock Rate” or “Clock Speed” • Megahertz (one million cycles per second) • Gigahertz (one billion cycles per second) • Dual-core processing (continued)© 2011, Educational Institute 28
  • 29. Measuring System Processing Capability and Speed (continued)Bus Input/Output System – BIOS – The electronic circuitry over which power, data, address and other signals travel. – This is how signals get from one location to another – Data bus: transports data – Address bus: directs operations – Control bus: transports instructions© 2011, Educational Institute 29
  • 30. Measuring System Processing Capability and Speed (continued)System Architecture• Industry Standard Architecture (ISA)• Extended Industry Standard Architecture (EISA)• Micro Channel Architecture (MCA)© 2011, Educational Institute 30
  • 31. Computer Add-Ons • Components or devices that are added to a system to increase its storage capacity, modify its architecture or upgrade its performance. • May require the insertion of a special circuit board or through an external access point.© 2011, Educational Institute 31
  • 32. Common Computer Add-Ons • Expanded memory – Memory that resides outside the computers basic memory. – Can be accessed in revolving blocks – Available through add-on circuit boards inserted in the expansion slots • Extended memory – Built in to the system board.© 2011, Educational Institute 32
  • 33. Common Computer Add-Ons • Modem devices – Telecommunications device that is used to transmit digital data over telephone lines • Fax boards – Facsimile. Allows a computer to send or receive images of documents© 2011, Educational Institute 33
  • 34. Common Computer Add-Ons • Interface Boards – Composed of a series of microchips on a circuit board containing an I/O port. – Connects to the CPU and allows communications between the CPU and a remote device© 2011, Educational Institute 34
  • 35. Common Computer Add-Ons • Network Interface Cards – Also called the Network Adapter Card (LAN) – Enables a computer to communicate on a network. – It can send and receive data© 2011, Educational Institute 35
  • 36. Hardware Configurations • Client-Server model – Uses a powerful file server PC to hold software application and all relevant data, communicates with the individuals PC workstations over the LAN.© 2011, Educational Institute 36
  • 37. Hardware Configurations • Client-Server model – In hotels, 2 servers usually run: • Hotel specific applications • General Purpose Software© 2011, Educational Institute 37
  • 38. Hardware Configurations • Remote-Server Model – Application Software is physically located somewhere other than the actual property. – Workstations are connected to the server using a Wide Area Network. – Cloud Computing is a new configuration using this model.© 2011, Educational Institute 38
  • 39. Hardware Configurations • Cloud Computing – The emergence of the internet (cloud) as a way to implement a distant configuration over virtual private network.© 2011, Educational Institute 39
  • 40. © 2011, Educational Institute 40
  • 41. Hardware Configurations • Cloud Computing – The server (cloud) is the internet with application software located at different websites. – Allows users to access data and programs anywhere as long as there is an internet connection© 2011, Educational Institute 41
  • 42. Software • The set of instructions followed by the Hardware. • This commands the automated system to perform useful tasks. • These can direct data processing procedures through operations.© 2011, Educational Institute 42
  • 43. Software© 2011, Educational Institute 43
  • 44. Software • Has two broad categories: – System Software • Responsible for diagnostics and Maintenance of hardware components. • Managed by System Suppliers – Applications Software • Under the users control can be generic or industry specific.© 2011, Educational Institute 44
  • 45. Operating System • Controls interactions between hardware components of an automated system and application software programs. • Needed to carry out instructions generated by application software programs© 2011, Educational Institute 45
  • 46. Operating System • Manages routine computer functions while maintaining system priorities. • Controls how the system receives, transfers and outputs information at the most fundamental levels.© 2011, Educational Institute 46
  • 47. Operating System • Programs that control the execution of programs. • Relies on GUI for operation • Has multi-tasking capabilities • Designed to provide effective data processing, sharing storage and facilities.© 2011, Educational Institute 47
  • 48. The Internet • A collection of diverse networks. • It is a network of networks that consists of millions of private, public, academic, business, and government networks, of local to global scope, that are linked by a broad array of electronic, wireless and optical networking technologies.© 2011, Educational Institute 48
  • 49. Internet Components • Bridge – Connects 2 or more networks that use the same data • Gateway – Means for two incompatible networks to communicate© 2011, Educational Institute 49
  • 50. Internet Components • Routers • Intranet – Internet Technology Applied within a company and these pages are restricted to its employees. – Normally password protected networks that utilizes firewalls.© 2011, Educational Institute 50
  • 51. Next Lecture can be seen at: • systems/© 2011, Educational Institute 51