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Unit 2 - Computer Hardware Devices
Unit 2 - Computer Hardware Devices
27
Computer Science
12th Grade
01/20/2014

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Term
PC
Definition
microprocessor for use by an individual, as in an office or at home or school.
Term
Server
Definition
a system (software and suitable computer hardware) that responds to
requests across a computer network, web server, email server
Term
Laptop
Definition
A portable computer small enough to use on one's lap.
Term
tablet
Definition
A general-purpose computer contained in a single panel. Its distinguishing
characteristic is the use of a touch screen as the input device.
Term
games console
Definition
complex computer systems specialized for game playing.
Term
Other programmable digital device
Definition
an electronic device, as a calculator or telephone, that can be programmed to
perform specific tasks.
Term
Input device
Definition
keyboard, mouse, sensors, touch screen, microphone, scanner, digital camera
Term
Output Device
Definition
printers (inkjet, laser, impact), speakers, force feedback devices, actuators, screens, projectors, robot arms, other control devices
Term
Storage Device
Definition
solid state, optical media, magnetic media. Store Data when power is off.
Term
Multi-function
Definition
both input and output functionality, all in one printer
Term
automated technology system
Definition
hardware components and software can be combined to form an automated technology system (self-service checkout, production line)
Term
devices that capture data for automated systems
Definition
barcode readers, magnetic strip readers, optical character readers (OCR), optical mark readers (OMR) and radio frequency identification systems (RFID)
Term
barcode readers
Definition
an electronic device for reading printed
barcodes. Like a flatbed scanner, it consists of a light source, a lens and a light
Term
magnetic strip readers
Definition
Used to read the data stored on the back of a bank card / usually swiped accross the read head.
Term
optical mark readers (OMR)
Definition
E.g. Lottery ticket reader. Boxes are shaded and light / dark reads converted to data.
Term
radio frequency identification systems (RFID)
Definition
wireless non-contact use of radio-
frequency electromagnetic fields to transfer data, small chip on any item.
Term
optical character readers (OCR)
Definition
device enabling letters, numbers, or
other characters usually printed on paper to be optically scanned and input to a computer
Term
actuators
Definition
type of motor for moving or controlling a mechanism or system, robot arm
Term
solid state storage
Definition
Storage with no moving parts, on a chip, flash memory
Term
optical media
Definition
CD, CDROM, CD RW, DVD, DVD RW
Term
Magnetic Media
Definition
Hard Disk Drive, internal or external.
Term
bytes
Definition
8 bits, measurement of capacity of CD/DVD/HDD/RAM/Flash
Term
RFID
Definition
A data collection technology that uses electronic tags for storing data on a very small chip
Term
OCR
Definition
Used to scan text into editable characters.
Term
OMR
Definition
Example - lottery tickets.
Term
Force Feedback Device
Definition
Eg.g Steering wheel on a games console game. Real experience
Term
Control Devices
Definition
Sensors activated to perform a particular task, e.g. turn lights on, heat water.
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