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Input & Output Devices
- Manual Input Devices
- Definition of input devices :
Hardware Devices that allow data
to be entered into a computer.
- Definition of Manual Input Devices :
Data that is entered by hand.
- Manual Input devices require humans to do
most of the work needed to get the data.
For Example : If you are using a keyboard to
input instructions into the computer, you
need to press the keys yourself.
- Manual Input devices require humans to do
most of the work needed to get the data.
For Example : If you are using a keyboard to
input instructions into the computer, you
need to press the keys yourself.
- Examples of Manual Input Devices :
Keyboard, Remote Control, Joystick,
Scanner, Graphics Tablet,
Microphone
- Definition of input devices :
Hardware Devices that allow data
to be entered into a computer.
- Direct Input Devices
- Definition : No human interaction needed to collect data
- For example : All human just have to
point the reader at the barcode
scanner. The reader will do the rest
- For example : All human just have to
point the reader at the barcode
scanner. The reader will do the rest
- Example of Direct Input devices :
Magnetic stripe reader, Chip and pin
reader, Barcode reader, Optical Mark
Reader ( OMR ), Optical Character
Reader ( OCR )
- Definition : No human interaction needed to collect data
- Sensors
- Definition : A devices which
automatically inputs data into a
computer system, where the data can
be changed anytime.
- Used to detect data in the surrounding
environment that constantly changes.
For example : Temperature - measuring
heat in a room, Light - setting off a
burglar alarm, Humidity - detecting
when plants are too dry
- Examples of sensors :
Temperature, Pressure,
Light, Sound, Humidity,
pH
- Uses of sensors
- Sensors are used in monitoring and control
applications. When monitoring, data is sent directly
to some sort of computer, is then processed and
used.
- Sensors are used in monitoring and control
applications. When monitoring, data is sent directly
to some sort of computer, is then processed and
used.
- Definition : A devices which
automatically inputs data into a
computer system, where the data can
be changed anytime.
- Output
Devices
- Definition : Hardware devices
that allow information to be
sent out of a computer system.
- Output devices are part of the
4 main hardware components
of a computer system.
- Examples of Output Devices :
CR Monitor, TFT Monitor,
Laser Printer, Inkjet Printer,
Plotter, Speakers
- Definition : Hardware devices
that allow information to be
sent out of a computer system.
- Control Devices
- Definition : Output devices that
work in conjunction with sensor
input devices and commands from
computers in order to control a
process.
- Control devices are output
devices that work
together with sensors.
- Control devices are output
devices that work
together with sensors.
- Example of Control Devices :
Motor, Buzzer, Heater, Light/Lamp
- Definition : Output devices that
work in conjunction with sensor
input devices and commands from
computers in order to control a
process.
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