COMPUTING REVISION

COMPUTING REVISION

1. CLOUD COMPUTING

   • ADVANTAGE OF CLOUD COMPUTING
     • Backing up - data backed up in the cloud with a reliable provider can be more reliable than storing your information on a hard drive or USB flash memory stick.
     • Compatibility - documents and files are designed to be compatible across different machines and browsers.
   • DISAVANTAGES OF CLOUD COMPUTERING
     • Connection – the user can only access their information if they have a network connection.
     • Storage - it is not always possible to store more than a few gigabytes online with one provider, whereas it is possible to purchase a few terabytes of physical storage to save information at home.
   • How does cloud computing work? Rather than owning their own computing infrastructure or data centers, companies can rent access to anything from applications to storage from a cloud service provider. One benefit of using cloud computing services is that firms can avoid the upfront cost and complexity of owning and maintaining their own IT infrastructure, and instead simply pay for what they use, when they use it. In turn, providers of cloud computing services can benefit from significant economies of scale by delivering the same services to a wide range of customers. What cloud computing services are available? Cloud computing services cover a vast range of options now, from the basics of storage, networking, and processing power through to natural language processing and artificial intelligence as well as standard office applications. Pretty much any service that doesn't require you to be physically close to the computer hardware that you are using can now be delivered via the cl

2. E-SAFETY

   • Do not share personal information (such as your date of birth) Avoid sharing your location on social networks eg snapchat If meeting someone you only know online, do so in a public place and take an adult with you. Don’t troll! (upsetting people online) Change your passwords frequently and avoid using the same password across all accounts

3. COMPERTATIONAL THINKING

   • ABSTRACT
     • Focusing on the important information only. Ignoring the details that are not needed.
   • Computational thinking allows us to take a complex problem, understand what the problem is and develop possible solutions. We can then present these solutions in a way that a computer, a human, or both, can understand.
   • DECOMPTERTION
     • Breaking down a complex problem or system into smaller, more manageable parts.
   • PATTERN RECOGNTIOIN AND ALGORITHEMS
     • Looking for similarities among and within problems. Looking for patterns. Developing a step-by-step solution to the problem, or the rules to follow to solve the problem.

4. HARDWARE

   • Magnetic Solid State Optical CPU RAM Processing Principally used for backup of important files from the hard disk and for the long term storage and archiving of data. Solid state devices use non-volatile random access memory (RAM) to store data indefinitely. Optical devices use a laser to scan the surface of a spinning disc made from metal and plastic. The purpose of the CPU is to process data. The CPU is where processes such as calculating, sorting and searching take place. Random Access Memory (RAM) is a fast temporary type of memory in which programs, applications and data are stored. Carrying out a set of instructions.
   • Hardware Input Output Storage Peripherals Memory Embedded The physical parts of a computer system, eg a graphics card, hard disk drive or CD drive. An input device is any piece of computer hardware used to provide data to a computer system. An output device is any piece of computer hardware used to communicate the results of data that has been processed. A storage device is a piece of computer equipment which can be used to store data. A peripheral device is defined as a computer device, such as a keyboard or printer, that is not part of the essential computer. The part of a computer that stores data. Embedded computers are used in car engines, spacecraft and MP3 players. They are dedicated systems that are designed for a fixed purpose.