3 input, output and storage technologies
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Transcript of 3 input, output and storage technologies
COMPUTER HARDWARES
INPUT DEVICES, OUTPUT DEVICES AND STORAGE MEDIA
PARTS OF A COMPUTER SYSTEM
33
2211 Monitor
CPU
Speakers
33
OBJECTIVES
To be able to identify and state the functions of:Input devicesOutput devicesStorage media
INTRODUCTION
Input device?An input device is a piece of
hardware that is used to enter data into a computer.
Input : Enter data
Input : Enter data
INTRODUCTION
Output device? piece of hardware that is use to get
information OUT of a computer
Output : Produce results /
data
Output : Produce results /
data
INTRODUCTION
Storage device? A device used for storing information/data.
Storage : keep / save
data
Storage : keep / save
data
INPUT DEVICES
Keyboard
Mouse
Scanner
JoystickInput
devicesInput
devices
Keyboard
a set of alphanumeric and command keys used to input information to a computer
Mouse and Joystick act as a pointing device controlling device
Scanner a device that scans images, printed text,
handwriting, or an object, and converts it to a
digital image.
OUTPUT DEVICES
Output devicesOutput devices
Printer
Monitor
Plotter
Projector
PRINTER
a printer is a device that accepts text and graphic output from a computer and transfers the information to paper.
MONITOR
A display screen used to present information from a computer
PLOTTER
Plotters are a specialist type of printer which is able to draw high quality images on very large pieces of paper, for example 3 foot wide by 10 foot long.
PRINTER VS PLOTTER
Printers
Plotters
STORAGE DEVICES
storage devicesstorage devices
Floppy disks
Hard disk
A zip disk
Pen drive
STORAGE DEVICES – KEEP DATA
Storage media
Capacity Ease of use
Floppy disk 1.44mb ★
Hard disk 40gb ★★★★
Pendrive 2gb to 16gb ★★★★
CD or DVD 700mb / 4.7gb ★★★
EXERCISE
Sort these devices into the correct column. * scanner * printer *keyboard * mouse *
monitor * joystick * speakers
Input devices Output devices
SUMMARY
Always remember:Input device is a device that used to
enter data
Output device is a device which capable of representing information from a computer
Storage media is a device that stores / keep data
RESEARCH – GOOGLE, SEARCH THE FOLLOWING DEVICES:
Input devices?Output devices?Touchscreen
Digital camera
Projector
END LESSON