Chapter #3 Interaction Elements

Question 1

Interaction:

Answer 1

when a human performs a task using computing technology

Question 2

Indirect pointing

Answer 2

A cursor or a symbol is needed. Ex a mouse

Question 3

Direct pointing

Answer 3

No cursor is needed. Ex light pen, stylus

Question 4

Spatial Hysteresis

Answer 4

A zone around the selection button that still allows the button to be clicked even if it wasn’t directly clicked. Ex Its close enough to count as a click

Question 5

Single-Switch Scanning
Linear Scanning
Two Tier Scanning

Answer 5

one button used for input
Used in the scanning key boards
Linear Scanning: one letter at a time
Two-tier scanning: one row at a time

Question 6

Gesture input

Answer 6

movements as input or to communicate

Question 7

Hard controls

Answer 7

physical and single purpose devices

Question 8

Soft controls

Answer 8

Interfaces created in software (like digital buttons)

Question 9

Control-Display Relationships:

Answer 9

also know as mappings relationship between operation of a control and the effect created on a display.

Question 10

Spatial Relationships:

Answer 10

Congruence: Control -> , Display ->
Transformation: Control forward, Display up

Question 11

Dynamic Relationships:

Answer 11

how the controller affects the speed of the response

Question 12

Physical Relationships:

Answer 12

Describes whether the response is a movement or a force in the controller.

Question 13

CD Gain

Answer 13

Control to Display gain in movement

Question 14

Latency

Answer 14

Delay between an input action and the corresponding response on a display

Question 15

Property Sensed

Answer 15

The input devices

Question 16

Order of Control:

Answer 16

The display response to the property controlled

Question 17

Joystick, there are 2

Answer 17

Isotonic: Senses displacement of the stick (good for position control)
Isometric: Senses force applied to the stick (good for velocity control)

Question 18

Mental Model/ Metaphors:

Answer 18

a physical understanding of an interface or interaction technique based on real-world experience

Question 19

Modes

Answer 19

a functioning arrangement of condition
Ex: Phone message light, on or off based on if a message is there
Ex: Keys on a keyboard can have multiple outputs, 3 and #
Nokia basically invented this
Mode switching, ex im powerpoint presenting, not presenting, uses multiple different buttons. Ex mode button on a watch

Question 20

Accelerometers

Answer 20

allows tilt or motion as an input, in many new phones

Question 21

Interaction errors:

Answer 21

Human and computer interaction error where there is a human error. Ex CAPS LOCK ON, while typing a password, hence many logins will say caps lock is on to prevent this interaction error.
Ex: scrolling frenzy, trying to highlight something but it scrolls farther down
Ex: focus uncertainty, filling a box might moe to the next, or tab might work or neither and you might have to manually click. Ex phone number 3 boxes
Ex: Auto complete, does tab work? Clicking it? enter?