Computers, part of your life – Grade 11 PDF

Computers, part of your life – Grade 11 Claire Smuts Video p2-10 It's all about ICT p2-10 Module 1.1 Contents 3 The role and value of ICT in the workplace CAT – a most valuable subject! The c...

Computers, part of your life – Grade 11 Claire Smuts Video p2-10 It's all about ICT p2-10 Module 1.1 Contents 3 The role and value of ICT in the workplace CAT – a most valuable subject! The computer Protecting your information Test and improve The role and value of 4 ICT in the workplace  How ICT influence one’s life 5 and life styles Jobs we do Way we store and watch photographs Way we entertain ourselves Way we shop and do banking Way we communicate Way we interact with friends Way we obtain and use information QUICK REVISION  How ICT influence 6 one’s life and life styles Communication ‘Over- availability’ Social networking sites Instant messaging ‘Blog’ and e-mails Always available – never switched off! QUICK REVISION  How ICT influence 7 one’s life and life styles Access to information Informatio   TV/ Radio n Find quickly E- mail Determine if source reliable Analyse  Cellpho ne calls and summarise WW W  SMS / QUICK REVISION MMS   How ICT influence 8 one’s life and life styles Leisure Movies, music and printed media available via Internet Video on Demand –from online storage Internet TV not using radio signals Online travel bookings Online computer games Fitness programs in front of TV with gaming console QUICK REVISION So what role does ICT 9 play in the workplace? Work wherever we have access to computer (and internet). Communicate more effectively (accurately & in variety of ways) with both employees & customers. Store and process vast quantities of data to make more informed decisions. Identify and adapt to changing trends (e.g. sales). Perform tasks that are difficult or dangerous for humans to do. So what role does ICT 10 play in the workplace? Perform repetitive mechanical actions with consistent quality, e.g. production line in a factory Empower individuals (smaller companies that make effective use of ICT can compete globally & with larger companies). ICT allows us to do all these things more quickly and with less manpower. So what role does ICT 11 play in the workplace? Also a negative role… Requires constant upgrading of skills, hardware and software. Smaller pools of highly-skilled ICT workers replacing large numbers of staff. ICT employees working longer hours to meet the expectations of customers. ICT blurs lines between work time and private time – workers receive work communication (voice & text) no matter where they are or what  CAT – the most 12 valuable subject! p3 CAT – the most valuable subject! 13 Use computers to solve problems CAT teaches you to: Use computers to Easily learn study and/or to use new CAT – the most valuable subject! 14 Fashion, Make use of game or graphics software & web page PCs for their designs designers Accountant Have to Doctors, s loves upgrade their paramedics spreadshee skills and nurses ts continually to make the best Careers use of new devices to improve care of Photographer patients DJs and s and movie- Businesses musicians makers use Social Combine & media to compose music advertise & using ICT stay in touch with clients  ICT is important in virtually any job you can think of. 15  You need to be able to source and process data and present information as quickly and as accurately as possible.  You need to be able to choose and use the right ICT tools for the job at hand. Taking CAT was the best decision you The computer 16 p3  The computer 17p3 Information Processing Cycle: Take Process Produce input it output Store input and output Communication with linked PCs When we say that one PC is more powerful than another, we mean that the more powerful PC can process more data, execute more instructions, fetch & store more data & run more programs (multitask) than the less powerful PC in a given time frame (e.g. 1 second)  What is a computer? 18 Laptops Smartphones Desktop Tablets computer  Multi-purpose  Electronic devices QUICK REVISION  Portable/mobile (left)  Classifying computers 19 Computers can be classified in terms of their purpose how ‘powerful’ they are their size A PCs power is determined by: NB! the speed & performance of the CPU(s) ! the size of the memory (memory/RAM allows more programs & data to be processed) the amount & type of storage it has the type of graphics card installed Types of computers 20 p4 Servers Desktops Processing power Laptops Notebooks Physical Tablets size Some laptops Smartphones can be more powerful Portable than desktops! Types of computers: Portable 21 Computers and ICT devices used for work and for: Entertainment (music, movies, games, reading, etc.) Surfing the web Communication Social networking Portability: work anywhere, at any tim  Types of computers: Portable 22 Laptops/notebooks Portable computers which use miniaturised parts that have a low power consumption, so as to allow for portable computing on battery power. Cases with hinged screens, keyboard and suitable pointing device (touchpad). Portable PCs more expensive than desktop PCs Biggest adv. of portable PCs (besides being with same specs.portable) is that they can run on battery power!!!  Types of computers: Portable 23 p5 ptops/notebooks: Power settings Specifying that the computer should conserve power by starting to ‘sleep’ or hibernate when it has not been used for a period of time  Types of computers: Portable 24 Laptops/notebooks: Power settings Setting the brightness of the screen Choosing a balance between power consumption and Saving power decreases the performance of your performance system!  Types of computers: Portable 25 Tablets Portable computer with a touch or pen-sensitive screen Ideal for quick, small scale computing Special operating systems designed for mobile devices Long battery life Wireless (WiFi) and cellular data connectivity (e.g. 3G and 4G/LTE).  Types of computers: Portable 26 Hybrid laptops /tablets Trend to include touch screens in laptops/notebooks Combine the touch screen with a hinge (to swivel the screen 360 degrees) – or to remove the screen completely So allowing the device to be used as a tablet ADV.: More powerful than tablets & run on full desktop Oss DISADV.: weigh more, shorter battery life & don’t have built-in cellular communications  Phablet 27 Between a tablet and a smartphone (too big for a cell phone & too small for a tablet), phones with a bigger screen size than 5”. Has the larger screen size of a tablet but keeps the ability to make phone calls of a normal cell phone  Types of computers: Portable 28 Smartphones Perfect example of digital convergence – combines the features and technologies of many separate devices. All smartphones have the following:  An operating system (Google Android iOS)  ‘Large’ colour screens  Built-in data modem (3G, HSDPA or 4G/LTE)  GPS for navigation  One or two cameras (front facing and back facing)  WiFi to connect to wireless networks  Speakers and a microphone  Types of computers: Servers and clients 29 Servers are computers that provide services or resources to other computers (clients) that are linked in the network. That is way they are more powerful than client computers. These services could be providing internet access or storing all the users’ files. A client PC is any computing device that connects to a server – so mobile devices can also be regarded as clients.  30 Dedicated devices, such as Automatic Teller Machines (ATMs), GPS (Global Positioning System) devices and household appliances like microwave ovens and washing machines, are designed to perform just one specific task. These devices are not computers. Different Types of Computers & their uses 31 Protecting your 32 information p6 The theft of hardware is not just about the cost of replacing the hardware 33 Data stored on the computer or device may not be backed up. Information might be private or sensitive. Information increasingly stored on portable devices. These devises are easily lost or stolen Some companies disable USB ports: Disable USB ports (e.g. by using suitable software) Prevent physical access to USB ports (e.g. by placing system units in lockable cabinets) Social implications Social engineering tricks 34 Social engineering, is the art of manipulating people into performing actions or divulging confidential information. Data protection Backups (making a copy of all data on a removable storage device and storing it on an offsite location) Archiving (files that are seldom changed or used are moved from a computer to another system Password protect (put a password on important documents so that no one can open or edit it) Encryption (encoding data on your computer or device so that unauthorised others cannot read the data )  Hardware theft and protection 35 Record the serial numbers of your hardware. Mark the casings & other components with ultraviolet pen. Install “hidden” security software that is activated when PC is stolen & thief makes use of Internet. Cable locks to chain equipment to a solid object. Lockable cabinets (with ventilation) for system units (‘boxes’). Motion sensors with an alarm which detect when a Uninterruptible Power Supply 36 Protects computer against power surges & spikes as well as power outages. Provides power to the computer(s) connected to it as soon as the power goes out for a limited time, giving you time to save your work & shut down safely. Test and improve 37 Written module 38 activity p9- 10 Do in Theory Note Books MEMO on Teams  Written Module 1.1 Activity Written Module Activity Assignment Find the Activity in YOUR student Class Notebook on Teams in the Theory Assignment Section!