Presentation on theme: "Lesson Objectives To understand what input and output devices are, and how they are used The understand the difference between input and output devices."— Presentation transcript:
1Lesson ObjectivesTo understand what input and output devices are, and how they are usedThe understand the difference between input and output devices.
2Input Devices An input device is used to get data in to a device. THINK – How many different ways can you think of to enter data into a computer?PAIR – Talk to the person to your left. How many can you come up with together?SHARE – Share your ideas with the class
3Output DevicesAn out device is used to output data that has previously been entered into a computerTHINK – How many different ways can you think of outputting data from a computer?PAIR – Talk to the person to your left. How many can you come up with together?SHARE – Share your ideas with the class
4Task 1: Use the worksheet to label the diagram. Make sure that you show whether the device is an INPUT or OUTPUT device.Name each deviceDescribe what the device is used for
5Used to digitise images. They make a digital copy of data. Input DevicesKey boardKnown as the “Qwerty” keyboard because of the layout of the letters on the first row.CameraWeb cams are now on most PCs and Laptops. Used for social networking or Skype but also may be used for iris or facial recognitionScannerUsed to digitise images. They make a digital copy of data.MicrophoneUsed to input sound and control the computer using voice recognition software.MouseInvented in 1963, and is now the most common form on input. Used to highlight, select and edit using sensors on the bottom
6Output Devices Speakers Printer Monitor Sound is output through use of speakers or headphones. In industry speakers are used as a warning, for example in hospitalsPrinterThese are used to produce a hard copy of information. There are different types including fast laser printers and cheaper ink-jet printers which are more common in the home.MonitorMost systems will have some kind of visual output that requires a monitor. LCD and LED are the most common flat screen monitors
7Task 2:There are many other input and output devices that you need to know aboutComplete the table on the reverse to fill in other input/output devices that you may already know.Use the BBC Bitesize>GCSE>ICT>Hardware revision section to help you fill in the rest.
8RFID (Radio-Frequency Identification) Other DevicesGraphics TabletA graphics tablet consists of a flat pad (the tablet) on which the user draws with a special pen. As the user draws on the pad the image is created on the screen. Using a graphics tablet a designer can produce very accurate on-screen drawings as if they were drawing on paper.INPUTPlottersA plotter is a special kind of printer often used for producing complex technical line drawings which need to be really accurate. The plotter is like a robotic arm and a series of pens which draws the image on a large piece of apperOUTPUTRFID (Radio-Frequency Identification)These are often used in shops to track items past sensors, e.g. baggage handling in airports, toll booths, car park access or in pet identification chipsINPUT
9Other Devices INPUT INPUT INPUT Sensors Barcode Reader Microphone Sensors are used on a wide range of applications including temperature, water level, light, pressure and motion sensors. Sensors are often found in computer control and more modern aeroplanes use sensors to provide automatic feedback.INPUTBarcode ReaderBar code readers are used to scan barcodes from labels to identify an item and retrieve the data from a databaseINPUTMicrophoneMicrophone are used to input sound and can be used to control the computer using voice recognition softwareINPUT
10Other Devices INPUT INPUT OUTPUT Joystick Touch Screen Actuators Joysticks used to be popular with gamers but have slowly been replaced by other types of game controller. In construction, joysticks are used to control machinery such as cranes.INPUTTouch ScreenAlternative to a mouse or keyboard. Senses the users touch. Often used in phones, tablets, kiosks etc.INPUTActuatorsA computer system being used to monitor and control a mechanical system will need some way of outputting a physical change. In aeroplanes, actuators are mechanical devices which adjust various parts of the system such as flaps or engines based on the data input.OUTPUT
11Task 3Answer the exam style questions about input and output devices