Computer Systems Nat 45 Computing Science Lesson 8

Computer Systems Nat 4/5 Computing Science Lesson 8: Input, Output Devices and Backing Storage

REVI SION 1. Name a device that has an embedded computer 2. Why type of computer can process data the fastest? 3. What computer is the most mobile? 4. What does 3. 7 Ghz mean?

ANSW ERS 1. Microwave, television, washing machine, dishwasher etc. 2. Supercomputer 3. Smartphone 4. 3 billion 700 million instruction per second

Nat 4/5 Lesson Aims By the end of this lesson you will be able to: Describe the input and output devices associated with computers Describe the backing storage available to use

Nat 4/5 A Basic Computer System Backing Storage Input Devices Processor Memory This is known as the 5 block diagram. Output Devices

Nat 4/5 Input devices are hardware that is attached to the computer that allows us to input data in to the computer to be processed. Input Devices Processor

Nat 4/5 Types of input devices Keyboard Mouse Microphone Digital Camera Digital Video Camera Joystick/Joypad/Controller (for games consoles) Graphics tablet Scanner Webcam

Nat 4/5 Output devices are hardware that is attached to the computer that allows the computer to output processed data to us. Processor Output Devices

Nat 4/5 Types of output devices Monitors LCD screen TFT screen Printers Inkjet printer Black and White Laser printer Colour Laser printer

Nat 4/5 Backing storage allows us to store applications and files permanently. So that we can load them and use them when we need to. Backing Storage Processor

Nat 4/5 Types of backing storage Hard Disk Drives Solid State Drives USB flash drives Memory cards CD-ROM, CD-R, CD-RW DVD-ROM, DVD-RW