1. Unit 1 Understanding computer systems: How ICT can be used to meet business needs OCR Cambridge Nationals in ICT Level 1/2 © Hodder & Stoughton 20131 Computing devices

2. Unit 1 Understanding computer systems: How ICT can be used to meet business needs OCR Cambridge Nationals in ICT Level 1/2 © Hodder & Stoughton 20132 Desktop computers Portable computing devices

3. Unit 1 Understanding computer systems: How ICT can be used to meet business needs OCR Cambridge Nationals in ICT Level 1/2 © Hodder & Stoughton 20133 Monitor Main case Keyboard Mouse DVD drive Components of a typical office desktop computer

4. Unit 1 Understanding computer systems: How ICT can be used to meet business needs OCR Cambridge Nationals in ICT Level 1/2 © Hodder & Stoughton 20134 Monitors can be ‘normal’ or widescreen in shape.‘normal’ widescreen Monitors Computer monitors are output devices used to display the tasks being worked on by the user.

5. Unit 1 Understanding computer systems: How ICT can be used to meet business needs OCR Cambridge Nationals in ICT Level 1/2 © Hodder & Stoughton 20135 A widescreen monitor is more suited to playing games and watching movies than office tasks. However, a widescreen monitor can display documents side by side, or be rotated to display a document in full.rotated Widescreen monitor

6. Unit 1 Understanding computer systems: How ICT can be used to meet business needs OCR Cambridge Nationals in ICT Level 1/2 © Hodder & Stoughton 20136 Rotating monitors allow e.g. A4 page documents to be viewed in their entirety. Rotatable monitors

7. Unit 1 Understanding computer systems: How ICT can be used to meet business needs OCR Cambridge Nationals in ICT Level 1/2 © Hodder & Stoughton 20137 Most office monitors are the ‘normal’ 4:3 screens, as these allow most documents to be viewed in the normal proportions. Standard monitor

8. Unit 1 Understanding computer systems: How ICT can be used to meet business needs OCR Cambridge Nationals in ICT Level 1/2 © Hodder & Stoughton 20138 Laptop computer Netbook Tablet computer Smartphone Portable computing devices

9. Unit 1 Understanding computer systems: How ICT can be used to meet business needs OCR Cambridge Nationals in ICT Level 1/2 © Hodder & Stoughton 20139 A netbook computer is smaller than a laptop and often has a lower specification. Netbooks do not usually have optical drives, so can be made smaller and lighter. Netbook computers Netbooks can be used for accessing email, instant messaging, live web chat, browsing the internet and most office tasks.

10. Unit 1 Understanding computer systems: How ICT can be used to meet business needs OCR Cambridge Nationals in ICT Level 1/2 © Hodder & Stoughton 201310 A laptop computer has an integrated screen, keyboard and pointing device. Laptops allow the user to carry out most office tasks while away from the office. A wireless connection allows the user to access email, instant messaging, live web chat, browsing the internet and viewing photographs. Laptop computers

11. Unit 1 Understanding computer systems: How ICT can be used to meet business needs OCR Cambridge Nationals in ICT Level 1/2 © Hodder & Stoughton 201311 Tablet computers are portable devices that usually have no pointing device or physical keyboard. A touchscreen allows the user to move a pointer or use an on-screen keyboard to carry out tasks. Tablet computers can be used to access email, instant messaging, live web chat, browsing the internet and viewing photographs. Tablet computers

12. Unit 1 Understanding computer systems: How ICT can be used to meet business needs OCR Cambridge Nationals in ICT Level 1/2 © Hodder & Stoughton 201312 A smartphone combines a voice telephone, a personal digital assistant, a web browser, a calendar and diary, a digital camera, a GPS system, a media player, and the ability to run ‘apps’ to carry out tasks. Smartphones

13. Unit 1 Understanding computer systems: How ICT can be used to meet business needs OCR Cambridge Nationals in ICT Level 1/2 © Hodder & Stoughton 201313 Keyboards are used to input characters while typing or entering commands. There may or may not be a separate number keypad. Keyboards

14. Unit 1 Understanding computer systems: How ICT can be used to meet business needs OCR Cambridge Nationals in ICT Level 1/2 © Hodder & Stoughton 201314 A mouse is an input device and is used to move the on-screen pointing device to wherever the user wants to on the screen, mouse buttons are used to select options or to choose from a menu. There may be a scrolling ‘button’ to assist with navigating around documents. Mouse

15. Unit 1 Understanding computer systems: How ICT can be used to meet business needs OCR Cambridge Nationals in ICT Level 1/2 © Hodder & Stoughton 201315 The main case will contain components such as the motherboard, hard disk and power supply. It will also contain the network card and other components. Main case

16. Unit 1 Understanding computer systems: How ICT can be used to meet business needs OCR Cambridge Nationals in ICT Level 1/2 © Hodder & Stoughton 201316 A DVD drive is a storage device. A DVD drive is used to read DVDs such as DVD-ROMs, DVD-Rs and DVD-RWs. Usually, a DVD re-writer is fitted so that data can be written to DVD-RS and RWs. DVD drive