Flashcards
ICT Unit 1 Topic A
Flashcards do conjunto (29)
- 1Digital Devices Multifunctional devicesThese devices can perform multiple functions, such as inputting and outputting data.
An example of is a touch screen - 2Digital Devices Personal computersThese are small and inexpensive computers for use by individual users.
examples are desktops and laptops. - 3Digital Devices Mobile devicesSmartphones and tablets are made with portability in mind to give people computer and internet access while on the go.
- 4Digital Devices SeversThese are powerful computers connected to other computers connected to a network
- 5Digital Devices Entertainment systemsThese are devices for watching TV/films (such as satellite or cable digiboxes), listening to music and playing video games
- 6Digital Devices Digital camerasthese capture images and videos digitally using an image sensor and store them as digital data on media such as memory card or hard drive.
- 7Digital Devices navigation systemsThese devices use a GPS receiver to locate the users position on a digital map and provide directions to a given destination
- 8Digital Devices communication devices and systemsThese devices can send and receive analogue or digital data to and from another device. Traditional analogue examples include phones and faxes.
- 9Digital Devices Data capture and collection systemsthese devices and input data through automated systems rather than direct data entry.
a barcode scanner
an optical mark reader
an Electronic point of sale - 10uses of digital systemsEducation and training
Personal
Social
Retail
Creative
Organisational use - 11Input DevicesKeyboard
Mouse
Scanner
Graphics tablet
Microphone
Webcam
Sensor - 12Output devicesMonitor
Project
Printer
Speakers
Headphones
Plotter - 13Accessibility and Data processing Accessibility devicesTrackball-alternative to a mouse
Touch Screen or large key keyboard
Eye motion sensors and hand motion tracker
Braille embosser-prints braille - 14Accessibility and Data processing Adaptive technologiesThese are technologies that have been designed specifically to aid people with disabilities. the include both hardware and software.
- 15Accessibility and Data processing Manual and automatic data processingThere are peripheral devices which can automate the input and processing of data and avoid human errors such as typos during data entry. Some types of data collection, input and processing and more commonly done manually. here are some examples of both.
- 16Accessibility and Data processing Automatic processes/devicesBiometric readers
Barcode reader
Optical mark recognition
Radio-frequency identification
Smart meters - 17Accessibility and Data processing Manual ProcessesKeying client or product details into a database.
Entering customers' meal choices into a restaurants systems.
Marking exam scripts
Entering survey responses from a form. - 18Storage Devices Hard Disk DrivesMagnetic storage devices, commonly used as the primary internal storage device but can be external
large storage, low cost and very reliable
slower than SSDs and not as portable - 19Storage Devices Solid State DriveFlash memory devices commonly used as the primary storage in portable computing devices.
Very fast data read/write speed, low power consumption and extremely reliable
Higher cost than HDDs, lower storage capacity and finite number of writes - 20Storage Devices SD cardsSmall flash memory cards that are commonly used for storage in digital cameras and phones.
Very small and portable, Easy to transfer between devices with SD card readers.
Small storage capacity, Hard to find compatible models - 21Storage Devices USB memory sticksSmall flash memory devices that connect through a USB port.
Extremely Portable, Compatible with most computer systems via USB ports.
Storage capacity is low, finite number of writes and are small so can be lost. - 22Storage Devices Optical disksSuch as CDs, DVDs and Blu-rays disks for software, music and movies.
small and portable, a lot devices have built in capacity to read optical discs
Archival stability of writable media can be questionable and Fragile. - 23Storage Devices Magnetic tapeIs used for large data backups.
Very large storage capacity, very cheap
Data is accessed serially which is slow, requires specialist equipment for recording and reading data. - 24operating systems real timea system which process data in real time.
for example RTLinux - 25operating systems Single-user multi-taskingDeals with multiple applications running at the same time.
- 26operating systems multi userenable several users to use them at the same time.
like a cloud server - 27Role of operating systems networkingoperating systems simplify networking in a computer. it implements a number of networking technologies such as:
the TCP/IP stack
network utility programs such as traceroute
device drivers for network interface cards - 28Role of operating systems securitya number of features are commonly built into operating systems to help improve security. these include:
user authentication
antivirus
backup facilities - 29Role of operating systems
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- BTEC IT FlashCards sobre ICT Unit 1 Topic A, criado por jack cann em 20-09-2021.
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- jack cann
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