peripheral = can attach to a computer, but not essential
device = computing hardware
peripheral device = hardware that attaches to the computer to complete an additional function
a peripheral device needs the computer to work
a peripheral device cannot work without the computer
the purpose of a peripheral device is to allow a computer to do an additional function
additional functions include putting photos onto your computer, checking email and lots more
categorised into input, output, storage, communication
input = provides data to the computer eg keyboard, mouse, scanner, router/modem
output = provides information from the computer, eg printer, screen, USB
peripheral = can attach to a computer, but not essential
device = computing hardware
peripheral device = hardware that attaches to the computer
a peripheral device needs the computer to work
a peripheral device cannot work without the computer
the purpose of a peripheral device is to allow a computer to do an additional function
additional functions include putting photos onto your computer, checking email and lots more
categorised into input, output, storage, communication
input = provides data to the computer eg keyboard, mouse, scanner, router/modem
output = provides information from the computer, eg printer, screen, USB
specification = detailed description of design of a product
digital device = computer device small to large ie smartphone to supercomputer
usability = how well users can use something
usability of digital devices = how successful it is for a user to work on a particular device
DESKTOP COMPUTERS
desktop computer, designed to interact via hardware. eg mouse and keyboard
desktop computer, interaction impersonal
desktop computer, need to sit down and use, or get a desk that is a lot higher to stand up and use
desktop computer, have a vertical screen so users can't easily interact with touch screens mode (if avail)
desktop computer, can't be moved, so can't be used away from their location
MOBILE TABLET AND SMARTPHONE
Hand held so can use in many locations
Hand held so must use one hand to hold and one hand to use
Touch screen when using user finger blocks part of the screen
touch screen, visual feedback needed for button pushing (can be audio click or button fade)
touch screen, large people have large fingers, small people have small fingers, difficult to use the device for some people
touch screen, different to mouse, drag and drop and right click functions are not obvious or sometimes not possible
touch screen, no cursor = no hover feedback
touch screen, direct interaction by touching the icon, more engaging than pointing with a mouse
OTHER SUCH AS AIRPORT KIOSK and ATM
custom design software on custom design hardware for one purpose = highly successful design
Kevin Matz <http://architectingusability.com/2012/08/19/the-impact-of-hardware-devices-on-software-ergonomics/> viewed 3 Feb, 2015 states the following.
For the majority of consumer and business applications, there are currently three main forms of general-purpose personal computing devices:
Desktop and laptop computers with a screen, keyboard, and a pointing device such as a mouse or trackpad, are comfortable for users sitting at a desk for a long period of time.
Tablet devices with touchscreens have a form factor that is comfortable for sitting and consuming content (reading webpages, watching movies, etc.), but entering information and creating content via touch-screen control is generally not as comfortable and convenient as with a desktop machine.
Mobile phones (and similar devices such as portable music players) are usually used for short bursts of activity while on the go.
development = a new or advanced product
trend = a direction in which something is changing
emerging = starting
mobile device = a device that can be carried with you
tablets and mobile devices are selling at near desktop levels now
improved processing
tablets and mobile devices will download more apps than desktops
tablets different sizes, 9" screen eg Nexus 9, 6" screen eg Nexus 6"
screen resolution is improving for tablets and mobile devices
LP-DDR4 memory will make mobile devices faster by 50% and powerful by 40%
LP-DDR4 memory can link transfer speeds of 17GBps (gigabytes per second), rising to 34GBps for 64-bit processors said Linley Gwennap, founder and principal analyst at The Linley Group, in a research note this month.
Go to the Apperian website. Explain in 15 words or less what it says about higher resolution screens.
Go to the Apperian website. Explain in 15 words or less what it says about greater processing power and capacity.
Make up 3 multiple choice questions and send them as an enhancement to this website HERE
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