Input&Output
- Created by: meggilmore
- Created on: 03-04-16 12:54
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- INPUT AND OUTPUT
- Input devices.
- Manual
- Concept keyboard
- Each button on a concept keyboard relates to a particular item or function
- Trackball
- Used as an alternative to a mouse
- Joystick
- Joysticks used to be popular with gamers
- Digital camera
- A digital camera takes pictures and can usually record video too.
- Scanner
- A scanner can be used to digitise images
- Concept keyboard
- Automatic
- Sensors
- Sensors are often used as part of a feedback cycle
- Barcode reader
- Barcodes are represented by black vertical bars and are read by a barcode reader
- Magnetic ***** (or *****e) reader
- Magnetic *****es are built into many plastic cards such as debit or credit cards and personal identity cards
- Magnetic Ink Character Reader (MICR)
- Magnetic ink characters appear at the bottom of cheques
- Optical Mark Reader (OMR)
- An OMR reads marks made by pencil on a printed form into the computer
- Sensors
- Manual
- CPU
- The CPU (Central Processing Unit) is the part of a computer system that is commonly referred to as the "brains" of a computer.
- The CPU is responsible for executing a sequence of stored instructions called a program.
- CPU's aren’t only found in desktop or laptop computers, many electronic devices now rely on them for their operation
- Output devices
- Monitor
- The most common output device is the monitor or VDU.
- Printers
- Laser printers are quite expensive to buy and run but produce a high quality output and are quiet and fast.
- nk-jet printers offer black and white or colour printing with reduced levels of quality and speed. Colour ink jet printers are cheaper to buy than colour laser printers.
- Dot matrix printers are not so common today
- Plotters
- A plotter can be used to produce high quality, accurate, A3 size or bigger drawings
- Other output devices
- speakersprojectorsbuzzersmotorsswitched outputslightsmechanical devices, eg a robot arm
- Monitor
- Input devices.
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