Sensors (general) in control and measuring applications

Temperature sensor
Automatic washing machines, automatic cookers, central heating
controllers, computer-controlled greenhouses, scientific experiments
and environmental monitoring

Pressure sensor
Burglar alarms, automatic washing machines, robotics, production line
control, scientific experiments and environmental monitoring

Light sensor
Computer controlled greenhouses, burglar alarm systems, robotics,
production line control, scientific experiments and environmental
monitoring

Graphics tablet
Inputting freehand drawings or retouch photographs

Optical Mark Reader
Inputting pencil marks on a form such as a school register, candidate
exam answers, any application involving input of a choice of options

Optical Character Reader
Inputting text to a computer ready for processing by another software
package such as word processors, spreadsheets, databases etc.

Bar code Reader
Inputting code numbers from products at a POS terminal, library books
and membership numbers

Video camera
Inputting moving pictures, often pre-recorded, into a computer

Web cam
Inputting moving pictures from a fixed position into a computer

Light pen
Where desktop space is limited, it is used instead of a mouse or for
drawing applications where a graphics tablet might be too big

CRT monitor
Applications where space is not a problem.  Applications where more than
one user may need to view screen simultaneously such as in design use,
e.g. when several designers may need to offer suggestions on a prototype

TFT monitor
Applications where space is limited such as small offices.  Applications
where only one person needs to view the screen such as individual
workstations

Multimedia Projector
Applications such as training presentations, advertising presentations and
home cinema Z it displays data from computers, pictures from televisions
and video/DVD recorders

Laser printer
Applications which require low noise and low chemical emissions, e.g. most
networked systems.  Applications which require rapid, high quality and high
volumes of output, e.g. most offices and schools

Inkjet printer
Applications which require portability and low volume output, where
changing cartridges is not an issue e.g. small offices and stand alone
systems.  Applications which require very high quality output and where
speed is not an issue, e.g. digital camera applications

Dot matrix printer
Applications where noise is not an issue and copies have to be made, e.g.
industrial environments (multipart forms, continuous stationery, labels etc.),
car sales and repair companies, manufacturing sites

Graph plotter
CAD applications, particularly where large printouts are required such as A0

Speakers
Any application which requires sound to be output such as multimedia
presentations and websites including encyclopaedias.  Applications that
require musical output such as playing of music CDs and DVD films



Control devices in Control applications

Motors 
Automatic washing machines, automatic cookers, central heating controllers,
computer-controlled greenhouses, microwave ovens, robotics, production
line control

Buzzers 
Automatic cookers, microwave ovens

Heaters
Automatic washing machines, automatic cookers, central heating controllers,
computer-controlled greenhouses

Lights/lamps
Computer-controlled greenhouse