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...