Topic 3.3 - Machines Flashcards
1
Q
QR Codes - New Developments
A
Newer QR coes are now being used because of the incraesed ability to add advertising logos.
2
Q
Advantages of Barcode scanner
A
Advantages to company -easier and faster to change prices on stock items -allows for automatic stock control Advantages to customers -errors in charging customers is reduced -faster checkout ques
3
Q
Keyboards
A
Each character has ASCII value.
4
Q
Optical mouse
A
5
Q
Printers - inkjet
A
- RGB color cartridges
- thermal bubble & piezoelectric
-good quality, color printing is needed
6
Q
Printer - Laser
A
- Toner is statically charged
- high volume and speed
7
Q
Interrupt - Printer
A
when printer encounters problem signal is sent to OS to deal with problem & notify user
8
Q
3D printers
A
- solid object is built up layer by layer using materials
- application: prototype
9
Q
Direct 3D
A
inkjet technology
10
Q
Binder 3D
A
not done yet
11
Q
Touch screens
A
- capacitive
- infrared
- resistive
12
Q
Capacitive touch screens
A
13
Q
Infrared touch screens
A
14
Q
resistive touch screens
A
-upper layer: polyethelyne with a resistive coating
15
Q
Capacitive touch screens - projective
A
