|
A free membership is required to access uploaded content. Login or Register.
Information Technology for the Health Professions, 4th Edition
|
Uploaded: 7 years ago
Contributor: Guest
Category: Medicine
Type: Lecture Notes
Tags: internet, computers, information, software, health, memory, access, maintained, computer, processing, standards, high-capacity, networks, devices
scanning, oleksiy
Rating:
(1)
|
Filename: burke_ch01_lecture.ppt
(1.69 MB)
Credit Cost: 3
Views: 193
Downloads: 1
Last Download: 6 years ago
|
Description
Lecture Chapter 1
Transcript
Introduction to Information Technology—
Hardware, Software, and Telecommunications
1
Information Technology
and Computer Literacy
Information technology includes:
Computers
Networks
Computer literacy
Computer Literacy
Computer literacy includes:
Knowledge of basic computer concepts
The ability to use computers to make tasks easier
The ability to use the Internet and World Wide Web
Computer
An electronic device which:
Accepts data as input
Processes that data according to instructions stored in memory
Produces information as output
Stores the results
Figure 1.1
Desktop computer.
Source: Oleksiy Mark/Shutterstock.com
Computers and Health Care
It is especially crucial for allied health students to have a knowledge of computers and networks
The federal government is attempting to make the use of the electronic health record (EHR) and integrated hospital information technology systems universal by 2014
Computer Classifications
Supercomputer
Largest and most powerful at any time
Used for scientific applications such as weather forecasting and simulations
Computer Classifications
Mainframes
Used by large institutions (businesses, hospitals, universities)
Powerful, multiuser computer; many users access mainframe through terminals
Used for data processing tasks, e.g., generating a payroll, processing insurance claims
Computer Classifications
Minicomputers
Scaled-down mainframe
Multiuser
Used in small businesses
Microcomputers (PCs, desktops)
Used by individuals
Computer Classifications
Netbooks
Scaled-down microcomputers
Light and easy to carry
Provide a link to the Internet, and support common application software
Computer Classifications
Personal digital assistants (PDAs)
Small, handheld computers
Used throughout the health care system for references, to gather information, and to write prescriptions
Smartphones and tablet computers have been embraced by health care providers
Computer Classifications
Smartphones
Cell phone with built-in applications and Internet access
Provide phone service, text messaging, e-mail, Web browsing, still and video cameras, MP3 players, and video viewing
There are many health-related apps for smartphones
Figure 1.2
Touchscreen smartphone.
Source: Oleksiy Mark/Shutterstock.com
Computer Classifications
Tablet computers
Wireless touchscreen computers which may use a stylus or digital pen to input information
Tablet computers have become widely used by health care providers
Figure 1.3
Tablet computer.
Source: iQoncept/Shutterstock.com
Computer Classifications
Embedded computers
Single-purpose computers on chips inside appliances or human beings
May be used to regulate a heartbeat or dispense medication, among other uses
Hardware
Includes all the physical parts of the computer, the parts you can see and touch
Input Hardware
Includes all devices used to digitize and input data into the computer
Figure 1.4
Hardware.
Source: Beekman, George, and Ben Beekman. Digital Planet Tomorrow’s Technology and You. 10th ed. New York: Prentice Hall, 2011.
Input Devices
Keyboards
Direct-entry devices
Pointing devices
Mouse
Microphones
Cameras
Input Devices
Scanning devices
Bar-code reader—scans universal product codes
Kurzweil scanner—text is input; voice reading the text aloud is the output
Input Devices
Scanning devices
MICR (magnetic ink character recognition)
OCR (optical character recognition)
OMR (optical mark recognition)
RFID (radio frequency identification) tags
Processing Hardware
Processing hardware comprises the brains of the computer
Central processing unit
Memory
Central Processing Unit
Control unit directs operation following instructions of programs
Arithmetic-logic unit performs arithmetic operations and logical operations (comparisons)
Memory
Random access memory (RAM)—temporary work space, holds current work
Read-only memory (ROM)—permanent, firmware, holds startup instructions
Output Devices
Soft copy
Monitors
Voice synthesis
Hard copy
Printers
Impact
Nonimpact
Plotters
Secondary Storage Devices
Magnetic media
Hard disks
Diskettes have been replaced by high-capacity media
Secondary Storage Devices
Optical media
CD-ROM, CD-R, CD-RW
DVD
Solid-state high-capacity memory devices
Flash memory
Software
System software manages the hardware
Operating system
Utilities
Software
Application software does tasks for the user
Word processors
Spreadsheets
Database management systems
Graphics
Communications
Specialized packages
Networking and Telecommunications
Connectivity—the fact that computers can be linked for sending and receiving data
Telecommunications—involves the linking of computers
Media
Data must follow some path between connected computers
Connections can be high bandwidth or low bandwidth, wired or wireless
Hospitals use fast T1 lines for moving images
Hospitals can use slow connections for e-mail
Protocols
Communications software includes:
Technical standards
Rules that govern communications between computers
Networks
Allow the sharing of hardware, software, data
Classified by size: LANs, WANs, personal networks
Expansion of Wireless Technology
Cell phones
GPS
WiFi
PDAs
Smartphones
Tablet computers
The Internet
The Internet is an interconnected network of networks that spans the world
Originated as ARPAnet (1969); subscribes to TCP/IP protocols
Services: exchange of text, data, programs; research; e-mail; MEDLINE; telemedicine; telecommuting
World Wide Web
Part of the Internet that allows the linking of multimedia documents (Web sites)
You must have an Internet connection and software called a browser
The World Wide Web
The Web is the graphical part of the Internet
Comprised of pages with hyperlinks to other pages
Can be searched using a search engine
Finding Information
Every document has an address URL (uniform resource locator) which you can enter if you know it
Browsing: start anywhere and click on links to other sites
Search Tools
Search engines
Allow the user to enter a search expression to find documents with the matching phrase
Subject guides or directories
Organize information into categories
Evaluating Information
There are no standards governing the quality of information on the Internet; much of it is unreliable
Evaluating Information
Some questions to ask when judging reliability of information:
Is the site maintained by an educational (.edu), nonprofit (.org), or government (.gov) institution?
Is the site maintained by an individual (address may include ~)?
Is the site maintained by a commercial organization (.com) that is trying to sell you something?
Evaluating Information
Does the page have an author?
Has the page been updated recently?
Does the information make sense and can it be supported by other sources?
Be careful of conflicts of interest on any site, even the FDA. For example, much of the drug budget for the FDA comes from the drug companies it regulates.
|
|
Comments (0)
|
Post your homework questions and get free online help from our incredible volunteers
|