Fichas

Input devices

12asante.f Inglés 17 fichas

Fichas del conjunto (17)

1input deviceused to enter data into a system
2keyboard entrythe use of a keyboard to enter data, the user presses the letters and symbols
3concept keyboardspecialised or concept keyboards are used in a business eg pubs and fast food restaurant where keyboard is pre programmed with specific keys for food items
4mousea pointing device used as a selection tool
5touch screensa touchscreen can detect exactly where on its surface it has been touched. touch screens are used in a railway station for ticket purchase
6joystickthe main use is to play computer games by controlling the way something moves on the screen
7digital cameratakes pictures and stores then on a memory card which can be transferred to a computer
8webcamare used as input into a computer system as part as a video conferencing system
9digital video recordersused to take video films which can be input into a computer
10microphoneused to input sound into a computer system and often used for voice recognition
11remote controlthe remote controller can be switched on electronic devices such as televisions or hard disk video recorders. they issue commands from the pre-printed buttons and can enter characters to set up or time
12scannerused to input hard copies of pictures/images and text into a computer
13MIDI interfaceMusical Instrument Digital Interface (MIDI) and is used to connect musical instruments to a computer
14Graphics tabletA graphics tablet consists of a flat surface and a stylus which can be used to produce freehand drawings or trace around a more complicated image
15Sensorsa sensor is a device that changes analogue to digital signals so that the computer can process them.
a sensor collects most analogue input-moistures, heat, pressure, etc
no human intervention is required
16magnetic stripA magnetic strip is a black strip on a plastic card and tends to hold static information useful for information that you do not want to alter eg credit cards
17chip and pinchip and PIN refers to card with a microchip and a PIN number that can process information. it is sometimes called a smartcard. The card needs to be placed in a special terminal that can read the chip. The PIN entered is checked to see if it matches the PIN registered to the chip. if a match is identified