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

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 3.7Ghz mean?

1.Microwave, television, washing machine, dishwasher etc. 2.Supercomputer 3.Smartphone 4.3 billion 700 million instruction per second

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 Nat 4/5  This is known as the 5 block diagram. Processor Input Devices OutputDevices Memory Backing Storage

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

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

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

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