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Mobile devices We use a wide range of technology devices and systems to communicate and share data. While the components are similar, how the components are used and perform can differ a little. The features on a mobile device can affect both the performance and user experience. More powerful features provide a better experience but reduce the battery life. Modern mobile devices use a system on a chip (SoC) technology to combine the CPU and GPU onto one chip. This has many benefits, including making the device smaller, easier to manufacture, faster, and needing less power. The battery life for a mobile device is important, as people need to be able to use it for at least a da and preferably more then a day. Recharging batteries takes time, and inconvenience for the user and reduces mobility. Designers therefore take a lot of care to design mobile devices with just the right mix of processing power and battery life. The amount of electrical power the processing consumes is not an issue,...

Computer memory Computer memory, like cache, RAM, and ROM is a solid state, which means they are microchips and they have NO moving parts. The different types of computer memory are used in for different purposes. RAM is used to store programs and data that the CPU is processing and that the user has accessed. PCs laptops, and some game consoles generally use dynamic RAM. This uses a type of transistor (an electrical component contained within the microprocessors) that needs a constant electrical power source to store data. Therefore when a computer is switched off, any data stored within the RAM is lost (deleted). Mobile phones, digital cameras and some games consoles devices genrally use static RAM (flash memory). This technology uses a type of transistor that retaines its state (on or off), so it stores data, even after the power supply is disconnected. Static RAM is more expensive and physically larger then dynamic RAM, but it uses less power and is faster which makes it more suita...

Main components of a computer Motherboard – The main printed circuit board (PCB) where all the other system components plug in. CPU – Central processing unit, each computer has at least one CPU or a microprocessor, which runs instructions contained in computer programs and undertakes input/output operations. The CPU has many parts, including arithmetic and logic (ALU) unit, control unit, registers, etc. Arithmetic and logic unit – This completes basic calculations (arithmetic) and comparisons (logic). Comparisons are used in sorting and searching operations. Control Unit – Each machine code instruction is extracted from memory. Decoded and run calling on the ALU when necessary. The output is either written  to the register for fast recall as part of subsequent instructions or back to main memory. The control unit is there to make the rest of the computer hardware do whatever is the result of the completed instruction. Registers – There are several types of register whithin the C...