• Repetitive movements and sitting at a workstation for extended periods of time can
result in injuries in the form of :
• Pain, tingling, numbness of the hands, headaches, neck pain
• Soreness in legs, arms and back
• Eyestrain, carpel tunnel syndrome
• These are all considered to be Repetitive Strain injuries
The Chair
• Backrest of chair should have a snug fit against your back
• You should be level with the monitor when seated upright in your chair
The Display
• The recomended veiwing distance is to have your face about one arm lengths away from
the monitor.
• If glare is a problem, position the screen at right angles to the light source
• Do not face a window
• Keep the screen clean
• Adjust the brightness and contrast controls
• Reflections can be eliminated by tilting the screen
The Keyboard
• With computer keyboards, all you need is a light touch while typing
• Typing too hard is bad for your joints and is also bad for the keyboard
• Your wrists should be as straight as possible and your arms should be parallel to the floor
Breaks
• Break up your computer tasks by getting up every once in a while to stretch or walk around
• A good rule of thumb is to only be in front of the computer for 50 minutes of every hour
Computer Lab Safety
• Make sure that all wiring and cables do not obstruct areas where people will be walking
• Be very careful that you don't get an electric shock when plugging and unplugging cables
• Food and beverages can damage the equipment in the lab therefore no food or beverages
around the computers
• No horseplay in the computer lab
• The “One Finger Rule”: If it takes more than one finger of pressure, it is too much and is
considered forcing the object
• Cables are to be taped down to the floor
• Cables are to be coiled when not in use
• Lighting – never touch the light bulbs on studio lamps
Date: _________________________________ Full Name: ________________________________
____________________________________________________________________________________________________
TTI1O – Quiz 1 – Computers, Safety & Ergonomics Page 2 of 3
Mr. J. Carron
Computer Survival Skills
• Know how to manipulate files and folders
• Cut
• Copy
• Paste
• Rename
The Socio Economic Context of Communications Technology
What is Communication?
Communication is the sending and receiving of information or messages
In order for communication to occur a message must be both sent and received
Important: if the receiver does not understand the message then it has not been received!
Purposes of Communication
Inform – to notify or report
Educate – to teach or instruct
Persuade – to convince or influence
Entertain – to amuse or divert
Control – to manage or be in command of
Types of Communication
Human to Human
Human to Machine
Machine to Machine
Machine to Human
Supplementary types
Types of Human Communication
Verbal Communication
Nonverbal Communication
Perception
Perception is the process of understanding a message
You may receive a verbal or nonverbal message from someone, but that message has to make
sense in order for it to be received
The process of perception can change how you understand a message
depends on the receivers personal experiences in the past
History of Communication
pictograms (an easily recognized symbol) e.g. Walk Sign
Ideograms are symbols that must be learned, e.g. Stop Sign
History of Communication
A true alphabet was formed when symbols began to represent sounds
As the alphabet and various languages were developed the printing process and artistic
communication arose
After electricity and computers were discovered data communication was developed
Data communication is communication between computers
Technology and Communication
Technology is… The practical (hands on) application of scientific knowledge.
Without technology science would just simply remain knowledge!
Date: _________________________________ Full Name: ________________________________
____________________________________________________________________________________________________
TTI1O – Quiz 1 – Computers, Safety & Ergonomics Page 3 of 3
Mr. J. Carron
Technology, Industry and Change
How does technology differ from industry?
o Industry is an organization that uses technology to produce goods and services for a profit.
Major Eras in American History
The Information Age
Currently we are in the midst of the information age
Defined as an era where the majority of people are involved in jobs related to information
Communication Technology
The purpose of communication technology is to transfer information by technical means
Communication Technology extends the capabilities of our human senses, e.g. the telephone
Comm. Tech. Categories
Graphic communications
Electronic Communications
Drafting
Photography
Print and media
Telecommunications
The Communication System
Communication can be described as a system with the goal of transferring information
Using this systems approach makes it easier to understand the communication process
The Universal Systems Model
A system has a purpose or goal, this can be called the desired OUTPUT of the system
The INPUTs are the resources necessary for achieving the OUTPUT
The PROCESS is the action part of the system, in this step the inputs are changed (or processed)
achieve the OUTPUT
Control Systems
In many systems, a FEEDBACK loop is added
FEEDBACK is a way of determining whether the actual results, or output, is the same as the
desired results
The Communication System Model
In a communication system, the purpose of the system is the transfer of information, or the sending
of a message
Inputs are all of the resources necessary for sending the message.
Processing is the act of communication
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