Tablet ComputersThe aforementioned popularity of the Tablet computer is only one aspect of why they were chosen as the hardware selected for this project. A tablet's physical characteristics were also a selection factor and were compared to those of its desktop and smartphone counterparts. The processing power of tablet PCs has improved significantly and now runs on multi-core mobile central processing unit (CPU) chips - for example, Tesco's own budget Hudl tablet runs on a Quad-Core processor of 1 .5 GHz. Although its processing power is not comparable to that of a multi-core processor found in full-sized desktop computers, it is more than sufficient to run a lightweight EPOS application. Additionally, tablet PCs contain all the major components of a desktop computer, packed into one small package: processor, display, network hardware, storage, memory (RAM), and user input (touchscreen). The small dimensions of the device make it suitable for areas where space is limited. Tablet PCs are also portable, so the device is not fixed to one location – this can be advantageous in scenarios such as using the tablet as a mobile EPOS system at an event. Or, carry out administrative tasks on the EPOS application outside the company premises, for example while traveling. Tablets have been preferred over smartphones due to their screen size. Tablets generally have a larger screen size than smartphones, usually 7 inches or more diagonally. A larger screen size allows for a less cluttered user interface or allows more information to be displayed on the screen. 42% of adults aged 65 and over are now online, OfCom research shows. This is an increase of 9% since 2012. Presbyopia is a common optical condition that develops naturally with age and describes a person who...... middle of paper ......alaxy Tab 7.0", introduced in September 2010 and runs on Android 2.2 (API level 8), but can later be upgraded to version 2.3 (API level 9). So my app will run on a minimum API level of 9 and a minimum target 10 (the last version before the release of Android 3.0 Honeycomb) to provide maximum compatibility. Older tablets are now few and far between and are most likely being replaced by newer hardware. However, my goal is to make my application affordable. Hardware replacements are usually expensive to purchase and rather than throwing away old hardware, my application hopes to give users a purpose to reuse them. Project Methodology After studying the main recent methodologies used in software design, I I decided to adopt an object-oriented design and spiral approach. Why were they chosen? Familiar, I've used it before. Spiral Applies well to my project.