.iGCSE ICT

Used with a specific pin which means they can access things

Debit, credit or smart card transactions

A - Can be used from anywhere D - If you forget your pin you can be locked out

A camera for recording images on video tape or transmitting them to a monitor screen

To take videos To transfer videos to a computer

A - Portable Can take pictures D - Can be heavy Expensive Easily broken

Reads data on credit cards and feeds it back to the computer

Security cards for entry to hotel rooms Credit or debit cards

A - Simple to use Cards aren’t expensive to produce D - Thieves can obtain readers and read the data on the card

Converts a real world property to data which a computer can process

There are temperature, pressure, light, sound, humidity, pH sensors

A - Can be automatic, reading are continuous so actions can be taken immediately D - Faulty sensors can give bad results

Cheque and bank account numbers are printed using magnetic ink using a special font that can be read by a MICR reader

Allow details from cheques to be read into a computer quickly and accurately

A - Even if someone writes over the magnetic ink, it can still be read D - More expensive than other data entry methods.

A device that captures images and turns them digital.

To capture memories

A - Memory cards store several hundred photos D - More expensive Not as good resolution

Reads information in the form of barcodes.

Very efficient Can be used as a security device

A - Very fast Less mistakes made D - Quite expensive Barcodes can be swapped

Controls the operation of the other device by infrared signals

TV DVD players

A - Devices can be operated from a distance D - Signals between control and device can be easily blocked

A card is inserted into the reader which can access the memory and data stored on it.

Credit cards ID cards

A - Smart cards can store much more data than magnetic strip cards D - People can be careless when using their PIN

Allows data from a multiple choice form to be read quickly and accurately into a compter

Lottery number forms Multiple choice exam answer sheets

A - Very fast More accurate that data being keyed in by a person D - Not suitable for text input If the marks don’t fill the space completely, or aren’t in dark enough pencil, they may not be read correctly

Stick which pivots on a base and reports its angle or direction to the device its controlling

Computer games Simulators

A - They give a better gaming experience for racing or flying styles of computer games D - Can break easily Some find it harder to control than a mouse

A pointing device Like an upside-down mouse with an exposed protruding ball.

Same pointing ability as a mouse

A - More actuate than a mouse Less desk space needed as they are stationary D - Not supplied with the computer User may need training as not standard equipment

A set of buttons, each button has a symbol assigned

To input text and numbers

A - Most computers come with a keyboard supplied Skilled typists can enter data very quickly D - If you can’t touch type it can be slow

Software that translates a scanned image of printed or typewritten text into a plain text file that can be read by a word processor.

Documents, sales receipts and mail

A - Faster and cheaper than manually doing it D - Not 100% accurate Has to be checked for mistakes

Allows the input of data through touching the screen with fingers

Game controls Phones Cameras

A - Easy to use Don’t need a mouse etc D - Not suitable for inputting large amounts of data Expensive

A pointing device that translates the motion and position of a user’s finger to a relative proportion on the screen

Used instead of a mouse on laptops

A - Useful for laptops when a mouse isn’t practical D - Moist or sweaty hands can disrupt the signals picked up by the sensors

Pointing device used with a stylus to transfer the natural movement of your hands into graphics applications

To produce drawing and graphics on the computer

A - Much easier to draw things than with a mouse D - More expensive than a mouse

A pointing device with two buttons to click and a ball to scroll.

To move the position of the pointer on the screen

A - Usually comes with the computer D - They need a flat space next to the computer

A keyboard used to enter numbers only

ATM to enter pin numbers

A - Faster than normal keypads for entering numbers D - Hard to enter text

Enters hard copies of information into the computer

Can scan any type of info onto computer

A - Any image digitised by the scanner can then be used on electronic devices D - Images take up a lot of memory space