Ch01 introduction to computers

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Ch01 introduction to computers

  1. 1. © 2010 Introduction to Computer Systems for Health Information Technology Chapter 1: Introduction to Computers
  2. 2. © 2010 History of Computers in Healthcare • 1960s – Financial applications • 1970s – Departmental computer systems – Dummy terminals – Hard drives
  3. 3. © 2010 History of Computers in Healthcare • 1980s and 1990s – Personal computers – Increase in speed – Specialized software – Networking
  4. 4. © 2010 Technology’s Impact on HIM Profession in 1990s • Electronic billing • Charge description master • Networking of systems
  5. 5. © 2010 Impact of Computers • Patient care – World Wide Web – Patient health record • Finance and reimbursement – Reimbursement systems • Public health and epidemiology – Secondary data – Track trends
  6. 6. © 2010 Impact of Computers • Research – Clinical trials • Education – Used in classrooms – Distance education – Internet databases
  7. 7. © 2010 Hardware • Portion of the computer that can be touched • Examples – Hard drive – Monitor – Mouse – Keyboard – Printer
  8. 8. © 2010 Hardware – Central Processing Unit • Megahertz • Cache memory • Random Access Memory
  9. 9. © 2010 Hardware – Types of Computers • Mainframe • Laptop computes • Handheld device – Personal digital assistant
  10. 10. © 2010 Hardware – Peripherals • Examples – Keyboard – Mouse – Printer – Scanner – Monitor – Speakers – Flash drive
  11. 11. © 2010 Hardware – Common Input Devices • Keyboard • Mouse • Light pen • Touch screens • Scanner • Digital camera and video • Microphone
  12. 12. © 2010 Hardware – Common Input Devices • Docking station • Optical character recognition
  13. 13. © 2010 Hardware within Computer • Personal computer – CPU – Motherboard – Memory chips • Random Access Memory • Read-Only Memory • Cache – System files
  14. 14. © 2010 Hardware within Computer • Ports – Traditional types • Serial port • Parallel port – Modern types • USB port • Firewire • Infrared light beam port • Bluetooth
  15. 15. © 2010 Hardware within Computer • Modem • Video card • Sound card • Fan • Expansion slots
  16. 16. © 2010 Hardware within Computer • Bus – Internal bus – External bus – Address bus – Data bus • Surge protectors
  17. 17. © 2010 Output Devices • Monitor – Resolution – Pixel • megapixel – LCD screen – Plasma screens
  18. 18. © 2010 Output Devices • Printers – Dot matrix • Dots per inch – Laser printer – Thermal printers – Ink jet printers – Multifunction printer
  19. 19. © 2010 Output Devices • Speakers • Data projector – Keystoning • Scanner • Optical disc – Write once read many
  20. 20. © 2010 Wireless Connection • Wi-Fi
  21. 21. © 2010 Notebook PC • Laptop • Wireless computers
  22. 22. © 2010 Software • Instructions to operate – Operating systems – Application software – Utility programs
  23. 23. © 2010 Software • Multitasking • Device driver • Enterprise software
  24. 24. © 2010 Programming Languages • Bit • Byte • Sample software languages – FORTRAN – COBOL – BASIC – Java – C++
  25. 25. © 2010 Internet Programming Languages • Hypertext markup language • Extensible markup language • Generalized markup language
  26. 26. © 2010 Communication and Internet Technologies • Network – Hub – Peer-to-peer • Firewall • Routes • Client-server networks • Local area network • Wide area network
  27. 27. © 2010 Interfaces • Connection between computer and network
  28. 28. © 2010 Internet Connections in Networks • Ethernet • Wireless • Fiberoptic • Modems – Dial-up – Cable – Digital subscriber line
  29. 29. © 2010 Internet Connections in Networks • Wireless cards
  30. 30. © 2010 Types of Networks • Bus • Star • Token ring • Tree (hierarchical) • Hybrid • Daisy chain network
  31. 31. © 2010 Internet Technologies • Internet – Internet service provider – High speed • T1 • T3
  32. 32. © 2010 Internet Technologies • Intranet • Extranet
  33. 33. © 2010 Computerized Records • Electronic health record • Electronic medical record • Computerized patient record
  34. 34. © 2010 Computerized Records – Factors • Instant access • Automatic transfer of data • 100% availability • Interface with other hospital systems • User friendly • Secure security semantics • Confidentiality • Integrity of system
  35. 35. © 2010 Computerized Records – Benefits • Improved access to education resources • Decreased clinical errors • Reduced redundant data entry • Reduced duplicate testing • Improved data analysis • Improved record accessibility • Increased accountability for accurate and complete records
  36. 36. © 2010 Computerized Records – Benefits • Improved patient confidentiality and record security • Consistent data presentation • Increased patient healthcare communications • Increased efficiency • Reduced operating costs
  37. 37. © 2010 Computerized Records – Benefits • Frees up space for document storage • Reduced lost or misfiled documents • Improved workflow • Increased reimbursement turnaround time • Ensured backup and disaster recovery

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