THE DEVELOPMENT OF TECHNOLOGY TECHNOLOGY IMPROVEMENTS As the range of input and output devices increases, the range of tasks a computer can perform improves. For example: Entering pictures into a document was once limited to using Clip Art or drawing a picture from scratch. Scanners improved this with the ability to scan a picture into a file, which could then be inserted into a document. NETWORK COMMUNICATIONS Communications components such as modems are now part of a standard computer system. A network is created when two or more computers and other devices are connected by a modem, network cable or wireless device technology. NETWORK COMMUNICATION A network within a small area (such as a room), building or buildings close together (such as a school or hospital) is called a local area network, better known as LAN. WIRELESS DEVICE Wireless device: A device that transmits and receives data from other sources, using electromagnetic radiation (e.g. radio waves) rather than being connected by electrical conductors such as wires. BENEFITS OF USING A NETWORK There are many benefits in using a network, the main being the need for fewer devices. In a network, only one printer is required as each computer communicates with the printer via the network. Other advantages lie in the ability to access fi les and applications on other computers and communicate via internal email. ACTIVITY Digital cameras 1. Find out how a digital camera works. 2. What hardware do you need to use it? 3. What advantages are there to having a camera in a smartphone? 4. What advantages are there to using a digital camera instead of a camera in a smartphone ANSWERS 1. Digital camera work through the process of the camera lens capturing the colour and features of the snap shot. Then the image is stored electronically through the SD card. 2. The hardware used in a digital camera is the memory card. 3. The advantages of having a camera in your smart phone is that they are thin, easy to carry and are light. 4. Using a digital camera allows you to use optical zoom, also the camera will allow for better quality of lighting.