VISUAL DISPLAYS By: Kem Okonkwo Regina Leaks

Definition Visual Display: Visualization is any technique for creating images, diagrams or animation to communicate a message. Visualization through visual imagery has been an effect way to communicate both abstract and concrete ideas.

HISTORY Early known European cave paintings date to 32,000 years ago. Purpose of cave painting is not known. Early known European cave paintings date to 32,000 years ago. Purpose of cave painting is not known. Theories describe cave painting as a way of transmitting information and for religious and ceremonial purposes.

HIEROGLYPHS Formal writing system used by the ancient Egyptians. They contained a combination of logographic and alphabetic elements. Circa 3200 BC, earliest known hieroglyphic inscription.

Examples of Visual Display Today Examples include screens on ATMs, ticket vending machines and information kiosks, and information displays in stations and airports. Others include: Plasma, LCD, digital camera, traffic lights and much more.

Imagine Graphics (UK) Airport Flight Status Board

Air Traffic Control Tower Display

Features of LCD TV 1366 x 768 resolution. 16:9 widescreen 1000:1 contrast ratio HDMI, Component video and VGA inputs. Some come with 2 or more built in speakers.

Advantage of LCD No burn-in of static images. Cooler running temperature. Increased image brightness. Longer display life (60,000 hrs) Lighter weight.

Disadvantage of LCD Lower contrast ratio. Not as good at tracking motion. More expensive. Not as common in larger screen sizes above 42”.

Plasma Television: The very first prototype for a plasma display monitor was invented in 1964 by Donald Bitzer, Gene Slottow, and Robert Willson. Plasma Television: The very first prototype for a plasma display monitor was invented in 1964 by Donald Bitzer, Gene Slottow, and Robert Willson.

Features of a Plasma TV x 768 resolution. 16:9 widescreen. 8000:1 contrast ratio cd/m2 brightness.

Advantages of a Plasma TV Larger screen size availability. Better contrast ratio. Better color accuracy. Better motion tracking.

Disadvantage of a Plasma TV More susceptible to burn-in if static images. Generate more heat. Do not perform as well at higher altitude. Shorter display life span (30,000 hrs)

The very first traffic light was a revolving gas lantern with red and green lights installed in a London intersection in A later version of the traffic light based on railroad signals was installed in Detroit, Michigan, in traffic lighttraffic light Garrett Augustus MorganGarrett Augustus Morgan to thank for the modern version and first patent of this traffic-stopping invention. Garrett Augustus Morgan

Format of Display Text Legibility: Text should be displayed using high contrast color combinations. Blocks: showing blocks of text on an information board for a few second is much easier to read Size: Adjustment of size is necessary, with good proportion with clear character shape. No Flicker: Add-on assistive devices shouldn’t cause screen to flicker with a frequency > than 2 Hz and lower than 55 Hz.

Navigating the Machine Visual instructions on the screen are the main guide for the user. Choice of pictograms and icons should be considered carefully. The moving components should be compatible with the direction of movement that occurs naturally e.g. 'up' results in an upward movement and increase in numerical value.

Use of Color Often used to highlight or code information. No more than five colors should be used in any display. Bright colors can produce glare, which might distract the user and cause the eyes to become tired. Bright colors can produce glare, which might distract the user and cause the eyes to become tired. Color Blindness is more common in males than in females. Therefore excessive use of color can also be distracting.