What is the difference between a single core and multi-core processor? Explain computer memory? Why do computers need memory? What is RAM? What are the various sizes of RAM used in computers? Does a smartphone and tablet use RAM? How much RAM do most laptops, tablets, and smartphones come with? Search the web and for images of RAM. Insert the images in the space below. Describe cache. How is cache used in a computer? Explain ROM. What makes ROM different from RAM? What is an optical drive? Do most laptop and tablet computers come with an optical drive installed? Search the web for images of optical drives. Insert the images in the space below What differentiates a port from a connector? How can you tell them apart