ICT

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What are the two different types of data processing?
Automatic and manual
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What can manual processing be used for?
Keying in mail+telephone orders, entering customer details from paper forms, processing sales (supermarket counter), marking exam papers.
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What can automatic processing be used for?
measuring gas+electricity, measuring earthquakes, satellites, processing ATM transactions, timing systems,.
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What are accessibility devices?
They provide alternative input and output options for using digital technology, usually for disabled people.
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Name some examples of accessibility devices.
Voice/speech recognition software (input data with speech), screen readers (device reads data aloud to user), touch screens, ergonomic keyboard and mouse, screen magnifiers/overlays, eye motion sensors.
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What are servers often used for?
Large businesses/schools to store software+applications etc
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Why do some businesses tend not to use EHD, USB flash drive and CD's as a form of storage?
Often because they are more likely to carry viruses.
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Why do businesses usually have formal procedures regarding storing data over a network?
So staff can access and share data.
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What does RAID stand for?
Redundant Array of Independent Disks
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What does RAID do?
Spreads data across a number of different physical disks.
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What are the advantages of RAID?
Increases speed, if one disk fails then data can be reconstructed using data from the remaining disks.
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What does OS stand for?
Operating system.
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What does it do?
The platform which enables software installed on a digital device to work. It includes the necessary functions and acts as an interface between software and hardware.
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Give some examples of OS.
iOS, Windows.
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What does GUI stand for and what does it do?
Graphical User Interface, allows users to interact with a digital device using any graphical interface.
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What is RTOS?
Real Time Operating System, processes data in current time.
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What is a single user task?
Can only run one single application at any one time. e.g basic phone
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What is a single user multi task?
Deals with multiple apps running at the same time, for example, smartphones.
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Define multi-user OS.
When several users can operate at the same on the same software applications.
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What is a NOS and what does it do?
Network Operating System, it controls access to resources and devices on a network.
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What security tasks are involved?
Run and analysis of data which is collated to form huge amounts of intelligence about the health of the IT system. To combat cyber attacks and develop new software.
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How is memory management used in an OS?
The larger the IT system the more memory required. This is why multi-user OS run on servers due to high amount of efficiency required.
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Examples of functions multi-task OS perform.
Scanning for viruses, playing music, browsing internet, providing information regarding storage, system and battery.
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What is meant by device drivers in an OS?
The OS manages your peripheral devices by using a 'driver' to link the digital devices with peripherals such as printing.
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What is a hard disk drive?
A magnetic storage device which is often used as primary internal storage but can be external.
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What are the advantages and disadvantages of hard disk drives?
+Large storage capacity, +Low cost p/byte, +Reliable, -Slower than SSD's, -External HDD's are not very portable (due to moving parts).
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What is a solid state drive?
SSD, a flash memory device which is often found in portable computing devices such as laptops and tablets.
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What are the advantages and disadvantages of a SSD?
+Fast data speeds, +Low power consumption, +Reliable, -Higher cost p/byte than HDD, -Lower storage capacity.
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What is an SD card?
Secure Digital Card, a small flash memory card that are usually used for storage in cameras and smartphones.
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What are the advantages and disadvantages of a SD card?
+Small and portable, +Easy to transfer between devices,-Small storage capacity, -Has some compatibility problems, -Can be easy to lose
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What is a USB memory stick?
Small, flash memory devices which connect to devices via USB port or cable.
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What are the advantages and disadvantages of a USB memory stick?
+Portable, +Compatible with most devices, -Storage capacity is low compared to SSD and HDD, -Can be easily lost
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What is an optical disk (CD, DVD etc)?
They're often used for storing software, music and movies.
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What are the advantages and disadvantages of a optical disks?
+Small and portable, +Compatible with lots of devices, cheap hardware can be purchased if not, -Archival stability of writeable media is poor, -Fragile and easy to damage.
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What is magnetic tape?
A storage device which is often used to back up large amounts of data.
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What are the advantages and disadvantages of a magnetic tape?
+Very large storage capacity, +Very cheap p/byte, -Slow, -Requires special hardware for recording and reading data.
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Other cards in this set

Card 2

Front

What can manual processing be used for?

Back

Keying in mail+telephone orders, entering customer details from paper forms, processing sales (supermarket counter), marking exam papers.

Card 3

Front

What can automatic processing be used for?

Back

Preview of the front of card 3

Card 4

Front

What are accessibility devices?

Back

Preview of the front of card 4

Card 5

Front

Name some examples of accessibility devices.

Back

Preview of the front of card 5
View more cards

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